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Level 3 Security Bag Seal - China Suppliers & Factory with Advanced Anti-Counterfeiting Technology
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Level 3 Security Bag Seal - China Suppliers & Factory with Advanced Anti-Counterfeiting Technology

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Level 3 Security Bag Seal Product Description:
Introducing the Level 3 security bag seal, a top-tier solution designed with advanced anti-counterfeiting technology. Manufactured by trusted suppliers in China, this seal features a base crafted from high-quality PET or PO anti-counterfeiting materials. Upon removing the release paper, an effective membrane forms a secure seal, making it perfect for security and logistics bags as well as anti-disassembly applications.
This innovative seal is equipped with a temperature-sensitive surface. When exposed to temperatures exceeding 60°C or subjected to high-heat tampering attempts, the VOID mark transitions rapidly from white to red, clearly indicating unauthorized access. Furthermore, if the temperature drops to 0°C or below, or during a low-temperature opening attempt, the anti-counterfeiting markings will fade, ensuring reliable dual-temperature protection. Our factory guarantees the utmost quality and security for all your packaging needs.

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    Product Details

    Product Parameters
    Specification of the Level 3 Security Bag Seal:
    Product Name Level 3 Security Bag Seal
    Face Stock PET/PO
    Function Anti-Theft; Anti-copy; Anti-counterfeit
    Face Film Thickness 25micron
    Adhesive Hot melt adhesive
    Colors Red, Blue, Yellow, Matt Silver, etc, or customized
    Size Can be customized
    Hidden Message (Text) VOID, OPEN VOID, OPENED, Custom
    Transfer Partial Transfer
    Surface Print Offer
    OEM/ODM Both
    Delivery By Air or By Sea
    Product Photos
    Level 3 Blue Security Bag Seal (5)
    Level 3 Blue Security Bag Seal (3)
    Level 3 Blue Security Bag Seal (11)
    Level 3 Blue Security Bag Seal (1)
    Level 3 Blue Security Bag Seal (6)
    Features of Level 3 Security Bag Seal
    Level 3 Blue Security Bag Seal (2)
    The surface of the security bag seal is the temperature indicator layer. Once the temperature is 60 degrees or above, the temperature sensitive layer will change quickly, usually white to red, and the temperature to red information is rapid, clear, conspicuous and intuitive. When the bag is exposed to a low temperature of 0 degrees or less, or when you tries to open through a low temperature, the anti-counterfeiting characters will fade.
    How to Use
    The application of Level 3 Security Bag Seal: It is often used for anti-counterfeiting bag sealing, anti-theft and anti-opening label, logistics, aviation, express, document, letter, banking system and other sealing label, mainly used to identify the unauthorized opening of products or packaging. Widely used in IT electronics, electrical appliances, security, medicine, chemical, shopping malls, banks and other fields.
    Product Application
    The application of Full transfer anti-counterfeiting label:
    Widely used in IT electronics, electrical appliances, security, medicine, chemical, shopping malls, banks and other fields.
    Security Bag Seal Application (1)
    Security Bag Seal Application (2)
    Security Bag Seal Application (4)
    Security Bag Seal Application (3)
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    Frequently Asked Questions
    Q What is a Level 3 Security Bag Seal and how does it differ from standard seals?
    A Level 3 Security Bag Seal is an advanced tamper-evident label that integrates multiple security features including temperature-sensitive indicators, VOID hidden messages, and partial transfer technology. Unlike standard seals, it provides three layers of protection — anti-theft, anti-copy, and anti-counterfeit — making unauthorized opening immediately visible and verifiable.
    Q How does the temperature-sensitive feature of the security bag seal work?
    The surface of the seal contains a temperature indicator layer. When exposed to temperatures of 60°C or above, the layer rapidly changes color from white to red, providing a clear and conspicuous visual alert. Conversely, when exposed to temperatures of 0°C or below — such as attempts to freeze-open the seal — the anti-counterfeiting characters will fade, indicating tampering.
    Q Can the Level 3 Security Bag Seal be customized in size, color, and text?
    Yes, full customization is available. The seal can be produced in a range of colors including Red, Blue, Yellow, and Matt Silver, and the size can be tailored to your specific requirements. Hidden message text options include VOID, OPEN VOID, OPENED, or a fully custom message. Surface printing and OEM/ODM services are also supported.
    Q What industries and applications are Level 3 Security Bag Seals suitable for?
    These seals are widely used across a broad range of industries, including IT electronics, electrical appliances, security, pharmaceuticals, chemicals, retail, and banking. Common applications include logistics packaging, aviation, express delivery, document sealing, letter sealing, and any scenario where detecting unauthorized opening is critical.
    Q What materials are used in the Level 3 Security Bag Seal?
    The face stock is made from PET/PO material with a face film thickness of 25 microns, ensuring durability and reliable performance. The adhesive used is a hot melt adhesive, which provides strong bonding to packaging surfaces while enabling the partial transfer tamper-evidence mechanism upon removal.
    Q What are the available shipping and delivery options?
    Orders can be shipped by Air or by Sea depending on your location, order volume, and urgency. For small or urgent orders, air freight is recommended for faster delivery. For large bulk orders, sea freight is a cost-effective option. Please contact us with your specific requirements and we will provide the most suitable shipping solution.