Barcode Topics


Barcode Quality Grades

    Barcode quality grades are assessed according to the standards set by the International Organization for Standardization (ISO). This grading system is primarily used to ensure the readability and accuracy of barcodes, which is crucial for industries such as manufacturing, logistics, retail, and healthcare.

    Barcode grades are typically evaluated based on several parameters:
    - Reflectance: The contrast between the dark and light areas of the barcode.
    - Contrast: The color contrast between barcode elements.
    - Edge contrast: The clarity of the barcode edges.

    According to the ISO/IEC 15416 standard, the quality grade of a one-dimensional barcode is determined by scanning the barcode multiple times and evaluating these parameters. Each scan yields a grade, and the final barcode quality grade is the average of all scans.

    Barcode quality grades are classified into six levels, from lowest to highest:
    - Grade F: Unreadable.
    - Grade D: Poor quality, difficult to scan, prone to errors.
    - Grade C: Average quality, readable but unstable.
    - Grade B: Good quality, generally readable with minor issues.
    - Grade A: High-quality barcode, excellent readability.

    Most companies require at least a Grade B to ensure accurate barcode reading under various conditions.

    International standards related to the quality of 1D and 2D barcodes include:
    - ISO/IEC 15416: This standard is for the quality evaluation of one-dimensional barcodes. It specifies the print quality parameters such as reflectance, contrast, and edge contrast.
    - ISO/IEC 15415: This standard is for the quality evaluation of two-dimensional barcodes like QR codes and Data Matrix codes. It covers aspects such as contrast, brightness, modularity, and print gain.
    - ISO TR29158 (or AIM DPM-1-2006): This is a quality evaluation standard specifically for direct part marking (DPM) of 2D barcodes, suitable for barcodes engraved on surfaces by methods like laser or pin marking.

    These standards ensure the readability and consistency of barcodes, which is critical for global supply chain and logistics management. Evaluating barcode quality helps reduce scanning errors and improves efficiency and accuracy.



    DIN QR Code is a type of QR code that complies with the German Industrial Standard (Deutsches Institut für Normung, DIN). This QR code is designed to meet specific quality and security standards to ensure consistent and reliable scanning. It is commonly used in applications requiring high precision and security, such as manufacturing, logistics, and the medical industry.

    Advantages of DIN QR Code include:
    - High Quality Standards: Compliant with strict German industrial standards, ensuring high quality and reliability.
    - Security: Provides high data security through specific encryption and verification mechanisms.
    - Compatibility: Compatible with various scanning devices and maintains stable scanning performance in different environments.

    However, DIN QR Code also has some drawbacks, such as:
    - Cost: Creating and maintaining a QR code that meets DIN standards may require higher costs.
    - Complexity: May require additional time and resources to understand and adapt to this standardized QR code.
    - Limitations: Designed for specific standards, it may not be suitable for all types of applications.

    Overall, DIN QR Code offers a high-quality and secure option, but its cost and applicability should be considered.


Digital Link

    Digital Link is a two-dimensional barcode technology using the GS1 standard that can encode various information such as product details, website links, and tracking data into one barcode. This allows consumers or supply chain participants to access rich information by scanning the barcode.

    Benefits of using Digital Link include:
    - Enhanced Interactivity: Consumers can access detailed information such as product origin, ingredients, and usage instructions directly by scanning the barcode on the product.
    - Supply Chain Transparency: Companies can track the production and distribution process of products, improving supply chain transparency and efficiency.
    - Marketing Tool: Can be used as a marketing tool by linking barcodes to promotional activities or brand websites, increasing customer engagement.

    However, Digital Link also has some drawbacks, such as:
    - Technical Requirements: Requires appropriate technical support to generate and manage these barcodes, which may increase the company's costs.
    - User Education: Consumers may need to be educated on how to use this new type of barcode, which requires time and resources.
    - Compatibility Issues: Not all scanning devices can recognize and process Digital Link barcodes, which may limit their application range.

    Overall, Digital Link provides an innovative way to enhance product information sharing and interaction, but also brings some implementation challenges.


Medical UDI

    Medical UDI (Unique Device Identification) is a unique identification system used to identify medical devices. This system tracks devices through a unique serial number, helping to enhance patient safety and support modern healthcare management.

    Benefits of using Medical UDI include:
    - Increased Patient Safety: Reduces medical errors by accurately identifying devices.
    - Enhanced Supply Chain Management: Better tracks the distribution and usage of devices.
    - Facilitates Recalls: Quickly and accurately identifies affected devices during recalls or safety alerts.
    - Supports Health Policy Making: Provides data on device usage and related health outcomes.

    However, Medical UDI also has some drawbacks, such as:
    - Implementation Cost: Setting up and maintaining a UDI system may require additional costs for medical device manufacturers.
    - Technical Challenges: Requires appropriate technical infrastructure to support the UDI system's operation.
    - Data Privacy: Must ensure the security and privacy of patient information.

    Overall, the Medical UDI system brings significant benefits to the management of medical devices, but also presents implementation and operational challenges.

    The implementation process of Medical UDI involves several stages, mainly including the following steps:
    1. Planning and Preparation: Develop an implementation plan for the UDI system, including technical requirements, timeline, and resource allocation.
    2. Standardized Coding: Select appropriate coding standards such as GS1 or HIBCC, and assign a unique identifier to each medical device.
    3. Label Design: Design labels containing UDI, ensuring compliance with relevant regulations and standards.
    4. Database Establishment: Establish a UDI database to collect and manage information related to devices, such as manufacturer, product model, expiration date, etc.
    5. Education and Training: Provide training on using the UDI system, including how to read, record, and report UDI information.
    6. System Integration: Integrate the UDI system with existing health information systems to facilitate tracking and management of devices.
    7. Monitoring and Evaluation: Regularly monitor the UDI system's operation and conduct evaluations and necessary adjustments.

    In Taiwan, the Ministry of Health and Welfare's Food and Drug Administration is responsible for promoting the implementation of the unique identification system for medical devices and provides relevant regulatory guidance and resources. The implementation details may vary from country to country, but they generally follow the basic steps mentioned above.


DPM (Direct Part Marking)

    < p> Two-dimensional code DPM (Direct Part Marking) is a technique of marking directly on the surface of objects, typically used for parts and components in the manufacturing industry. This marking is usually in the form of a two-dimensional code, capable of storing a large amount of information such as production date, batch number, and serial number, to achieve product tracking and traceability.

    Benefits of using DPM include:
    - Durability: DPM markings are very durable and remain identifiable even under extreme conditions.
    - Anti-Counterfeiting: Since the marking is directly on the part, it is difficult to tamper with or counterfeit.
    - Space-Saving: No need for additional labels or stickers, suitable for small parts with limited space.
    - Increased Efficiency: Aids in automated and precise asset tracking.

    Advantages and Disadvantages:
    - Advantages:
    - Enhanced Traceability: Can permanently mark on parts, remaining identifiable even under harsh manufacturing and usage conditions.
    - Cost Savings: Reduces the use and maintenance of labels, saving costs in the long run.
    - Disadvantages:
    - Initial Investment: Requires special equipment and technology for DPM marking, potentially involving high initial investment.
    - Technical Limitations: Certain materials or surfaces may be difficult to mark with DPM or may require special treatment to achieve good readability.

    The implementation method usually includes the following steps:
    1. Choose Marking Technology: Select suitable marking technology based on material and application, such as laser etching, dot peen, chemical etching, or inkjet marking.
    2. Design Two-Dimensional Code: Design the two-dimensional code containing the required information.
    3. Marking Equipment: Purchase or lease suitable marking equipment.
    4. System Integration: Integrate the DPM system into the production line and perform necessary software configuration.
    5. Quality Verification: Ensure the marking quality meets industry standards and specifications.

    Overall, DPM provides an efficient and reliable way to mark and track parts, but its technical and cost investments need to be considered.

    Ensuring the readability of DPM (Direct Part Marking) markings is crucial as it involves directly marking information on parts that must remain clear and readable throughout the product lifecycle. Here are some methods to ensure DPM marking readability:
    1. Choose the Right Marking Technology: Select the best marking technology based on the material and usage environment, such as laser etching, dot peen, chemical etching, or inkjet marking.
    2. Optimize Marking Parameters: Adjust marking equipment parameters such as laser power, speed, and focal length to achieve the best marking effect.
    3. Use High-Quality Scanning Equipment: Use scanners specifically designed to read DPM markings, capable of handling various surface reflections and marking contrasts.
    4. Perform Marking Verification: Use barcode verifiers to evaluate the quality of markings and ensure they meet industry quality thresholds and standards, such as AIM DPM standards.
    5. Conduct Trials and Adjustments: Conduct trials in the production environment and adjust the marking process based on actual reading results to ensure the final markings are readable.

    These methods can significantly improve the readability of DPM markings, supporting effective tracking and management. This is particularly important for applications requiring high traceability and durability, such as the aerospace, automotive, and medical device industries.


Amazon Transparency Program

    The Amazon Transparency Program is a product serialization service launched by Amazon to prevent counterfeit products from entering the market and reaching customers. Through this program, each product is labeled with a unique transparency code (similar to a QR code), which consumers can scan to verify the product's authenticity and learn about its packaging process, thus enhancing the shopping experience.

    Advantages include:
    - Anti-Counterfeiting: Helps brand sellers avoid counterfeit products being resold, protecting brand reputation and sales profits.
    - Increased Consumer Confidence: Consumers can verify the authenticity of purchased products by scanning the code, increasing trust in the brand.
    - Enhanced Brand Protection: With unique codes, Amazon can confirm the authenticity of products before they reach consumers, reducing the circulation of counterfeits.

    Potential drawbacks include:
    - Additional Costs: Each code has a certain fee, which may increase the seller's operational costs.
    - Increased Packaging Process: Each product requires a unique code, potentially making the packaging process more cumbersome.
    - Limited Protection Scope: If counterfeit sellers create new product pages to sell counterfeits, the program may not provide protection, and sellers may still need to resolve intellectual property issues through legal channels.

    The Amazon Transparency Program provides a mechanism for protection and verification for brands and consumers, but it also brings some implementation challenges and cost considerations.


Laser-marking 2D Barcodes

    Laser-marking 2D Code, is the process of permanently engraving a 2D barcode onto a surface using laser technology. This marking method utilizes a concentrated laser beam to alter the contrast of specific surface areas, creating a clear 2D barcode.

    The main types of laser marking machines are as follows, each suitable for different materials:

    1. Solid-State Lasers: Includes diode lasers and Nd:YAG lasers. Diode lasers have lower power and are suitable for non-metal materials such as wood or plastic. Nd:YAG lasers are suitable for metal materials.
    2. Fiber Lasers: Suitable for engraving or cutting metal materials, but not suitable for non-metal materials (except for certain engineering plastics). Fiber lasers have high volumetric luminous efficiency, suitable for commercial metal marking or cutting.
    3. CO2 Lasers: The most common and mature type of laser, suitable for engraving, cutting non-metal materials such as wood, leather, paper, acrylic, and rubber. Certain materials like glass, stone, and anodized aluminum can also be surface-engraved.

    When choosing the right laser engraving machine, consider the type of material to be processed, as well as the required engraving or cutting precision and depth. Different types of laser sources and power ranges directly affect the machine's application range and effectiveness.


Vulcanized Tire QR Code

    A vulcanized tire QR code is a special label that can vulcanize with the tire at temperatures up to 210°C, forming a permanent mark on the tire. This label does not fall off, deform, or discolor throughout the tire's lifecycle and is resistant to water, acid, alkali, salt, oil, and solvents.

    The implementation process usually includes the following steps:
    1. Print the label using specialized resin ribbons and barcode printers.
    2. Attach the printed label to the tire and vulcanize it, ensuring a tight bond between the label and the tire.
    3. After vulcanization, the barcode and tire become one, and a barcode scanner or inventory device can read it with a 100% recognition rate.

    Advantages include:
    - Can withstand high temperatures and chemicals during tire manufacturing.
    - Provides a durable and hard-to-destroy tracking method.
    - The printed barcode is clear and easy to scan and identify.

    Potential drawbacks include:
    - Requires specialized printing and vulcanization equipment.
    - Initial investment cost is relatively high.
    - If the barcode is damaged, other tracking methods may be needed.

    Alternative solutions can consider using other types of high-temperature-resistant labels or adopting different tracking technologies such as RFID labels. These labels may not require vulcanization but can still provide effective tracking functions. Additionally, more traditional methods such as directly printing or engraving serial numbers on the tire can also be considered.


Line Scan Camera

    Line Scan Camera is a type of camera specifically designed to capture high-resolution images of the object's surface. They consist of a single line of pixels, constructing the final two-dimensional image pixel by pixel. This type of camera is particularly suitable for scanning continuously moving objects or in situations where the field of view or installation space is limited.

    Compared to area scan cameras, the main difference is the way images are captured. Area scan cameras use a rectangular sensor to capture the entire image at once, while line scan cameras construct the image line by line, usually requiring the object or the camera itself to move during the scanning process.

    Benefits of using line scan cameras include:
    - Ability to capture high-resolution images of fast-moving objects.
    - Suitable for large, high-speed, or high-resolution image capturing applications.
    - Excels in continuous or non-continuous surface inspection, such as plastics, textiles, metals, or paper.

    Advantages and Disadvantages:
    - Advantages:
    - High Resolution: Can provide higher resolution than area scan cameras.
    - Suitable for Continuous Production Lines: Can scan while the object is moving, suitable for production line inspections.
    - Space-Saving: Requires only a small part of the target object to be viewed, allowing installation in limited spaces.
    - Disadvantages:
    - Requires Object Movement: To construct a complete two-dimensional image, the object must move during the scanning process.
    - Higher Cost: Generally more expensive than area scan cameras.
    - Complex Setup: May require a more complex setup and calibration process.

    Usage method typically involves the following steps:
    1. Select a suitable line scan camera, considering resolution and scanning speed.
    2. Set up the camera according to application needs, such as working distance and light source.
    3. Ensure uniform movement of the object during the scanning process to construct a complete image.
    4. Use appropriate software for image processing and analysis.

    Line scan cameras are a powerful tool suitable for specific industrial applications, capable of providing high-quality images, but their cost and setup complexity should be considered.



    OCR-A and OCR-B are fonts specifically designed for Optical Character Recognition (OCR), while Semi-OCR usually refers to semi-automatic OCR systems.
    OCR-A is a font standardized by the American National Standards Institute (ANSI) in 1968, characterized by simple, bold strokes to facilitate early computer system recognition. This font is monospaced, with each character having a fixed width.

    OCR-B was designed by renowned typeface designer Adrian Frutiger in 1968 for Monotype Corporation. Its design aims to meet the needs of optical reading devices while being easier for humans to read. OCR-B follows the ISO 1073-2:1976 standard and was revised in 1979.

    Semi-OCR usually refers to a semi-automatic character recognition system that may require human intervention to assist in the recognition process. For example, the SEMI OCR font is used for marking silicon wafers in the semiconductor industry, with a character set that includes 26 uppercase letters, 10 numbers, a dash, and a period. The shapes and sizes of these characters are specified by SEMI M12/M13 standards, using a 5×9 dot matrix in single density mode and a 10×18 dot matrix in double density mode.

    These fonts and systems are designed for automated data input and processing, particularly in situations requiring large amounts of text recognition and rapid processing. However, they may have limitations, such as dependence on specific types of fonts or characters and the need for manual correction or intervention in some cases.


OMR (Optical Mark Recognition)

    OMR (Optical Mark Recognition) is a technology that identifies specific marks on documents or barcodes using a scanner. This technology typically uses a red light beam to scan and identify data based on the amount of light reflected by the marks. The principle of OMR is that marked areas reflect less light than unmarked areas, thus being identifiable.

    OMR has a wide range of applications, with the most common being in examinations where students use HB or 2B pencils to fill in answer sheets, which are then quickly graded using OMR equipment. Additionally, OMR is used for lottery ticket selection, surveys, and various barcode recognition tasks. With advancements in technology, modern OMR equipment can even process two-dimensional barcodes such as QR codes.

    The advantages of OMR include its ability to process large amounts of data quickly and accurately, and its low error rate due to the straightforward recognition process. However, the disadvantages may include reliance on high contrast and specific shapes of marks, and the potential need for manual correction or intervention in some cases.


Micro QR Code (mQR)

    Micro QR Code is a smaller version of the QR code, featuring a single positioning pattern, allowing it to be printed in smaller spaces than a standard QR code. Micro QR codes have a smaller data capacity, storing up to 35 digits, but their data storage efficiency is high, so the size of the code does not increase significantly even with more data.

    Applications of Micro QR codes include:
    - Marking small items such as electronic components or machinery hardware.
    - Tool and equipment management in the medical and pharmaceutical industries.

    Practical cases show that Micro QR codes can be used to:
    - Provide more information on product packaging without taking up too much space.
    - Track and manage small medical instruments.

    These cases highlight the advantage of Micro QR codes in saving space while providing effective information transmission.


History of the First Barcode

    The concept of the first barcode in history originated in 1949, invented by Americans Norman Joseph Woodland and Bernard Silver. To solve the inefficiency of supermarket checkout, they designed an automatic identification system that later evolved into the barcode system we know today.

    On October 7, 1952, they registered the world's first barcode patent (Patent No. #2,612,994). The initial barcode design was called the "bullseye" barcode because it consisted of concentric circles of bars and spaces, resembling an archery target. Although this design was theoretically similar to modern barcodes, it was not widely adopted due to technical limitations at the time.

    The commercial application of barcode technology began in 1966 and reached a milestone on June 26, 1974, when a pack of Wrigley's chewing gum became the first product scanned in a store with a barcode. This event marked the official adoption of barcode technology in the retail industry, leading to its rapid global popularity.

    Woodland and Silver's invention revolutionized the way goods are sold and inventory is managed, making barcodes an indispensable part of modern commerce.


Louis Vuitton and Anti-Counterfeiting

    The history of Louis Vuitton (LV) brand and anti-counterfeiting dates back to the late 19th century. Founded in 1854 by Louis Vuitton, the brand initially became renowned for making high-quality trunks. As the brand grew, anti-counterfeiting became an important consideration due to the emergence of numerous counterfeit products in the market.

    In 1896, to enhance product identification and prevent counterfeiting, LV's second-generation leader Georges Vuitton created the famous Monogram floral pattern. This pattern includes a four-leaf flower encircled by a circle, a four-pointed star resembling a cross, a concave diamond resembling a diamond, and the founder's initials "LV". Influenced by Japanese art at the time, the design is believed to be inspired by Japanese family crests.

    This pattern not only became an important decorative element of the brand but also served as an anti-counterfeiting mark, allowing people to identify LV products from a distance. This design, known as "old flowers," has been passed down for over 120 years and has become a classic symbol of the brand.

    Besides the Monogram pattern, LV has other designs and technologies to enhance product security and anti-counterfeiting capabilities. For example, they introduced the revolutionary Tumbler lock, a single lock system equipped with two spring-loaded latches, making LV trunks as secure as safes.

    These innovative anti-counterfeiting measures, combined with the brand's high-quality craftsmanship and design, have made Louis Vuitton a legendary brand in the luxury market.


Inkjet Printers

    There are several types of two-dimensional code inkjet printers, each with its specific advantages and disadvantages, suitable for different applications. Here are some common types of two-dimensional code inkjet printers:

    1. Continuous Inkjet Printer (CIJ):
    - Advantages: High speed, capable of marking more than 1000 bottles per minute; non-contact marking does not damage the surface of the printed object; easy to edit and modify printing content.
    - Disadvantages: May require specific types of ink; adhesion may be insufficient on certain materials.
    - Suitable Applications: Suitable for high-speed production lines such as beverage bottling production.

    2. Drop-on-Demand Inkjet Printer (DOD):
    - Advantages: High-resolution printing, suitable for printing high-quality text, complex logos, and barcodes.
    - Disadvantages: Printing speed may be affected by font dot matrix, longer ink drying time.
    - Suitable Applications: Suitable for high-resolution printing applications such as packaging box labeling.

    3. UV Inkjet Printer:
    - Advantages: Can be applied to almost any packaging material surface for two-dimensional code printing; high-precision printheads with piezoelectric inkjet technology achieve high-speed, high-definition, high-resolution two-dimensional code marking.
    - Disadvantages: Equipment cost may be high; requires skilled operators.
    - Suitable Applications: Suitable for various material surfaces, especially when high-precision printing is needed.

    4. Laser Inkjet Printer:
    - Advantages: No need for ink, reducing consumable costs; excellent anti-counterfeiting effect, beneficial for product tracking records; environmentally friendly, no harmful chemicals produced.
    - Disadvantages: High equipment cost; requires skilled operators.
    - Suitable Applications: Suitable for applications requiring permanent marking, such as metal parts marking.

    5. Handheld Inkjet Printer:
    - Advantages: Lightweight and portable; easy to operate with a touch screen, even for less skilled workers; high flexibility, suitable for marking large items, irregular shapes, and frequently changing information.
    - Disadvantages: Printing speed is limited compared to automated inkjet equipment; printing consistency and accuracy may be affected by manual operation; requires regular cleaning and maintenance to ensure normal operation.
    - Suitable Applications: Suitable for marking large or immovable items, such as heavy industry enterprises, construction sites, non-production line distributors, logistics centers.

    When choosing the right two-dimensional code inkjet printer, consider the printing material, printing precision, production speed, cost, and environmental factors. Each type of inkjet printer has its unique application scenarios, and the most suitable type should be chosen based on specific needs.


Barcode Label Printer

    1. Portable Label Printer:
    - Advantages: Lightweight and portable, suitable for on-site applications and outdoor work.
    - Disadvantages: Relatively limited functionality, slower printing speed.
    - Application Scenarios: Suitable for situations requiring label printing at multiple locations, such as logistics distribution centers.

    2. Desktop Label Printer:
    - Advantages: Easy to operate, suitable for offices and point-of-sale use.
    - Disadvantages: Printing speed and durability are not as good as industrial types.
    - Application Scenarios: Suitable for stores, small studios, or offices for label printing.

    3. Industrial Label Printer:
    - Advantages: High durability, rich functionality, suitable for high-intensity use.
    - Disadvantages: Larger size, higher price.
    - Application Scenarios: Suitable for production lines or industrial environments for large-scale label printing.

    The main printing modes of label printers are thermal and thermal transfer:
    1. Thermal Printing:
    - Advantages: Lower material cost, easy to operate.
    - Disadvantages: Printed labels are susceptible to heat and light, not durable.
    - Application Scenarios: Suitable for short-term use labels, such as supermarket price tags.

    2. Thermal Transfer Printing:
    - Advantages: High printing quality, strong label durability.
    - Disadvantages: Higher material cost, more complex equipment maintenance.
    - Application Scenarios: Suitable for long-term preservation labels, such as asset tracking labels.

    When choosing the right label printer, consider the application environment, printing frequency, quality requirements, and budget.


Barcode Labels

    There are many types of barcode labels, each with specific application scenarios and advantages and disadvantages. Here are some common types of barcode labels:

    1. Matte Paper/Wood-Free Paper Labels:
    - Advantages: Multi-purpose, suitable for information labels and barcode printing, especially for high-speed laser printing.
    - Disadvantages: Paper is prone to curling, thermal material makes it difficult to write on, and images and text may fade over time.
    - Application Scenarios: Suitable for product barcode labels, catering industry, chain store POS systems.

    2. Coated Paper Labels:
    - Characteristics: Smooth surface, good printing effect, relatively low cost.
    - Applications: Suitable for supermarkets, inventory management, clothing tags, etc.

    3. Pearl Paper Labels:
    - Advantages: Waterproof, wear-resistant, suitable for long-term use in humid environments.
    - Disadvantages: Relatively high cost, not suitable for all printing needs.
    - Application Scenarios: Suitable for cold storage and frozen food packaging bags, pharmaceutical and medical product labels.

    4. Matte Silver Labels:
    - Advantages: Excellent adhesive heat resistance, waterproof, oil-resistant, moisture-resistant, high-temperature resistant, wear-resistant.
    - Disadvantages: Requires ribbon printing, may not be suitable for all printing equipment.
    - Application Scenarios: Commonly used for packaging, electrical product labeling, safety regulation labeling.

    5. PET (Polyethylene Terephthalate) Labels:
    - Characteristics: High-temperature resistant, friction-resistant, dirt-resistant, chemical-resistant, anti-static.
    - Applications: Suitable for applications requiring high temperature and chemical resistance, such as electronic product labels.

    6. PVC Labels:
    - Characteristics: Good flexibility, soft touch, suitable for high-end occasions.
    - Applications: Commonly used for jewelry, watches, high-end product labels.

    7. Fragile Paper Labels:
    - Characteristics: Cannot be removed intact after being stuck, will break when removed.
    - Applications: Suitable for product warranty and sealing use , anti-counterfeiting labels.

    8. Thermal Paper Labels:
    - Characteristics: No ribbon needed for printing, but susceptible to heat and light.
    - Applications: Suitable for price tags and other retail uses.

    9. PP Synthetic Paper Labels:
    - Characteristics: Waterproof, oil-resistant, chemical-resistant, and tear-resistant.
    - Applications: Suitable for food packaging, chemical product labels.

    10. PE Synthetic Paper Labels:
    - Characteristics: Excellent texture, prints beautifully, excellent writing and printing performance.
    - Applications: Widely used for computer plotter backing paper, clothing carry bags, tags.

    When choosing the right barcode label material, consider the application environment, printing frequency, quality requirements, and budget.


UL Certification Labels

    UL Certification Labels are provided by Underwriters Laboratories (UL) for verifying the accuracy of marketing and promotional claims of products, processes, systems, or facilities. UL is an independent, objective, and scientifically reasonable evaluation agency. Its mark helps companies showcase the green environmental attributes of their products and draw attention from buyers and consumers when the products are launched. After obtaining UL certification, manufacturers can use the UL certification mark on product packaging and marketing materials, helping consumers identify safe and trustworthy items. The UL certification mark allows you to demonstrate that your products meet high safety standards and have a competitive edge in the market.

    UL Certification Labels are categorized into different types based on their uses and product types. Here are some common UL certification label categories:
    1. Standard Labels: These labels are printed directly by manufacturers authorized by UL in the United States and have a fixed form. Among them, L-type labels are not limited by material but the quantity of labels is strictly controlled. For example, L-type labels are most commonly used for products like wires and cables.

    2. Combination or Custom Labels: These labels need to be authorized by the UL label center before printing. Usually, combination labels are used for finished products that must remain clearly readable during their lifecycle, such as warning, danger, and caution labels.

    3. Marking and Labeling Systems: This is a broader category including various labeling and marking materials. Here are some specific UL certification label categories:
    - PGDQ2: This belongs to the highest level in marking and labeling systems, applicable to warning, danger, and caution labels that must remain clearly readable on the product.
    - PGJI2: This is the UL certification level for blank labels printed on thermal printers. Usually, these labels are printed by OEMs at their facilities.
    - PGIM2: This is the UL certification for finished printed labels, typically bonded to plastic surfaces during the molding process.
    - PGGU2: This certification is only for the material, not involving specific label forms.

    If you need more detailed information, it is recommended to refer to relevant UL official documents or contact UL for more details.


Invisible Ink

    Invisible ink, also known as special ink, is a type of ink used in printing and anti-counterfeiting. It is usually transparent or colorless under natural light but reveals specific colors, patterns, or text under certain conditions such as UV light or infrared radiation. Here are some common types of invisible ink and their anti-counterfeiting applications:

    1. Invisible Fluorescent Ink:
    - Appears black under natural light but shows color when exposed to UV light.
    - Commonly used for anti-counterfeiting labels, securities, tickets, etc.
    - Easy to verify authenticity using UV light.

    2. Infrared Ink:
    - Transparent and colorless under natural light, but shows specific colors when exposed to infrared light.
    - Commonly used for banknotes, certificates, labels, etc.
    - Verified using infrared detectors.

    3. Photosensitive Ink:
    - Changes color with temperature variations.
    - Commonly used for anti-counterfeiting labels, product packaging, etc., and can be verified by friction or temperature changes.

    4. Glow-in-the-Dark Ink:
    - Absorbs sunlight and emits light in dark environments.
    - Commonly used for product packaging and printed materials, offering visual appeal.

    These invisible inks are not only used for anti-counterfeiting but also for creative designs such as adding fun to restaurant menus, gifts, and events.


Electronic Paper Labels

    Electronic Paper Labels (ESL) are a digital display technology used for product prices, product information, and labeling. Compared to traditional paper labels, ESL has the following features:

    1. Low Power Consumption:
    - ESL uses electronic paper technology, consuming power only when changing the display, thus extremely power-efficient.
    - Compared to LCD or OLED displays, ESL does not require backlighting, avoiding potential blue light hazards.

    2. Paper-like Visual Experience:
    - The display effect of electronic paper is similar to traditional paper, reducing visual fatigue.
    - Suitable for applications such as e-readers and product price labels due to its paper-like characteristics.

    3. Real-time Updates:
    - ESL can connect to backend databases, allowing real-time updates of product prices, promotional activities, etc.
    - Reduces label replacement and labor costs, improving efficiency.

    4. Environmental Protection:
    - The low power consumption of ESL reduces energy consumption.
    - Expected to eventually replace traditional paper, reducing deforestation and substantial water usage.

    5. Wide Application:
    - ESL is not only suitable for the retail industry but also for smart factories, warehouses, and other scenarios.
    - Its smart features are more suitable for development in the new retail industry.

    In summary, electronic paper labels have advantages such as low power consumption, a paper-like visual experience, real-time updates, and environmental protection, making them a technology with the potential to replace traditional paper labels.



    JEDEC Tray, also known as matrix trays, is a packaging method used for integrated circuits (ICs). These components are nested in fixed positions in rows and columns, hence also known as "matrix" trays. The pitch of each component (known as "pitch") is defined by JEDEC standards. This allows automated pick-and-place machines to accurately locate and pick up components from the tray and place them on printed circuit boards.

    Key features of JEDEC Trays include:
    - High Durability and Lightweight: JEDEC Trays are designed for high durability and lightweight. Each tray undergoes rigorous testing and quality control, offering a variety of material options to withstand different operating temperatures. The full range of tray materials can meet customers' cost considerations for optimal cost-performance.

    JEDEC Trays play an important role in the safe handling, storage, and transportation of integrated circuits.