For procurement managers, security professionals, and logistics specialists, selecting the right tamper-evident bag manufacturer is a mission-critical decision. It requires balancing security performance, product consistency, regulatory compliance, and supply chain reliability.
TL;DR: Asia’s top tamper-evident bag manufacturers in 2026 include Adsure Packaging (Hong Kong), Mega Fortris (Malaysia), Pannorth (Thailand), Dynaflex (India), and Seonjin Innotech (South Korea). Adsure leads on security certifications, custom capability, and banking-grade compliance.
Tamper-evident bags play a vital role in industries such as banking, cash-in-transit (CIT), aviation security, law enforcement, healthcare, pharmaceuticals, and e-commerce logistics. As the global market continues to grow—driven by increasing demand for chain-of-custody protection and anti-counterfeiting solutions—Asia has emerged as a key manufacturing hub.
This list highlights the Top 5 tamper-evident bag manufacturers in Asia as of 2026, each offering strong capabilities in secure packaging, innovation, and global supply.
List of Best Tamper-Evident Bag Manufacturers in Asia
Tamper-Evident Bag Types: Bank deposit bags, ICAO STEBs, UN3373 specimen bags, forensic evidence bags
Overview: Adsure is one of Asia’s earliest and most specialized manufacturers of tamper-evident security bags, with over 40 years of experience in secure packaging engineering.
The company offers a comprehensive product portfolio covering banking, aviation duty-free, healthcare, and law enforcement sectors. With certifications such as ASTM, REACH, and ICAO STEBs compliance, Adsure has built a strong reputation for quality, customization, and global export capability.
Its integrated manufacturing—from film extrusion to printing and bag conversion—ensures consistent performance and competitive pricing for international clients.
Tamper-Evident Bag Types: Courier bags, security envelopes, deposit bags
Overview: Mega Fortris is a globally recognized security packaging provider with a strong presence across Asia, Europe, and the Americas. The company is particularly known for its high-security seals and integrated tracking solutions, serving logistics, customs, and transportation sectors.
Its tamper-evident bag solutions are designed for traceability and compliance, making it a preferred partner for multinational supply chains and government-related applications.
Overview: Pannorth Plastic Industries is a well-established manufacturer in Southeast Asia, known for its large-scale production capacity and expertise in plastic packaging.
The company provides tamper-evident courier and mailing bags widely used in logistics and e-commerce sectors. Its strength lies in cost-effective manufacturing, flexible customization, and the ability to handle high-volume international orders.
Pannorth has built long-term partnerships with regional and global distributors, making it a reliable supplier for businesses seeking scalable packaging solutions.
Overview: Dynaflex Private Limited is a growing flexible packaging manufacturer in Asia, with strong capabilities in film extrusion, printing, and bag conversion.
The company serves logistics, e-commerce, and industrial packaging sectors, offering cost-effective tamper-evident solutions for high-volume applications. Its strength lies in scalable production, customization flexibility, and competitive pricing, making it a viable partner for regional and international buyers.
Tamper-Evident Bag Types: Evidence bags, medical bags, specialty security packaging
Overview: Seonjin Innotech represents Korea’s advanced manufacturing capabilities in specialty films and secure packaging.
The company focuses on high-performance materials, precision manufacturing, and niche applications such as medical and forensic packaging. Its technical strength lies in film engineering and quality control, making it suitable for customers requiring higher-specification products.
The Best Asian Alternative: Adsure® Packaging Limited
While all five manufacturers demonstrate strong regional capabilities, buyers seeking a balanced combination of cost efficiency, compliance, and innovation often consider Adsure® Packaging Limited as the leading Asian partner.
Adsure stands out for:
ICAO-certified STEBs used in global airport duty-free systems
For global procurement teams aiming to diversify supply chains without compromising quality, Adsure offers a strategic balance between Western standards and Asian manufacturing efficiency.
Final Thoughts
These five companies represent the core strength of Asia’s tamper-evident bag manufacturing industry in 2026.
As demand continues to grow across banking, healthcare, logistics, and aviation sectors, selecting the right supplier requires careful evaluation of:
Security technology
Certification compliance
Production consistency
Supply chain reliability
The manufacturers listed above combine regional manufacturing advantages with global service capabilities—making Asia an increasingly important hub for secure packaging solutions.
Frequently Asked Questions
What should I look for in a tamper-evident bag manufacturer?
Key criteria include security certifications (ICAO, ISO 9001), product range breadth, customisation capability (printing, sizing, seal types), minimum order quantities, lead times, and references from comparable industries such as banking, aviation, or law enforcement.
Why choose an Asian tamper-evident bag manufacturer?
Asian manufacturers — particularly those in Hong Kong, Malaysia, and Thailand — offer competitive pricing, large production capacity, and established export experience. Leading Asian suppliers like Adsure Packaging hold international certifications and supply global banks, airlines, and government agencies.
Is Adsure Packaging ICAO-listed?
Yes. Adsure Packaging Limited is a listed manufacturer of ICAO-compliant STEBs (Security Tamper-Evident Bags), meaning its products are authorised for use at international airports to carry duty-free liquids through transfer security checkpoints.
What is the minimum order quantity for custom tamper-evident bags?
Minimum order quantities vary by manufacturer and product type. For standard sizes, MOQs typically start at 5,000–10,000 units. Custom-printed or custom-sized bags may require higher MOQs. Contact Adsure Packaging directly for a quote tailored to your volume and specification.
https://adsurepackaging.com/wp-content/uploads/2015/03/Adsure-Security-Packaging-Bags.png400500administratorhttps://adsurepackaging.com/wp-content/uploads/2017/10/adsure-logo-4.pngadministrator2026-03-17 07:40:332026-07-14 06:59:25Top 5 Tamper-Evident Bag Manufacturers in Asia (2026)
In today’s world, where security is paramount, ensuring the safety of sensitive information during transit is critical. Whether it’s important documents, cash, or valuable items, protecting these from tampering is essential. This is where tamper-evident envelopes come into play. These specially designed envelopes offer a level of protection that makes it easy to spot if a package has been tampered with. In this article, we will dive into everything you need to know about tamper-evident envelopes, including their purpose, how to detect tampering, and the requirements they must meet.
TL;DR: Tamper-evident envelopes use specialised adhesives and void patterns to make any unauthorised opening immediately visible. They are the standard for securing documents, cash, and sensitive items across banking, legal, and government sectors.
A tamper-evident envelope is a type of security envelope designed to show visible signs if it has been opened or tampered with. Unlike standard envelopes, these envelopes have built-in features, such as specialized seals, adhesive tapes, or markings, that break or become visible if someone tries to open the envelope. These features make it easy to detect any unauthorized access, ensuring that the contents remain safe and secure throughout the shipping or handling process.
Key Features of Tamper-Evident Envelopes
Specialized Seal or Tape: Often, tamper-evident envelopes include a sealing mechanism (like a tamper-evident adhesive) that shows a broken or altered seal if someone attempts to open the envelope.
Visible Markings: Some envelopes include marks or inks that change color or become visible if tampered with, providing an immediate indication of unauthorized access.
Resistant Materials: The envelope material is often made from high-strength materials that resist damage, making it difficult to reseal once it has been opened.
What Are the Requirements for Tamper-Evident Envelopes?
Tamper-evident envelopes must meet specific requirements to effectively protect their contents. Here are the key features and standards that define a tamper-evident envelope:
Visible Tamper Markings: The envelope must clearly show signs of tampering if any attempt is made to open it. This could include a broken seal, color change on a security tape, or visible patterns.
Durability: The envelope should be made from strong, tear-resistant materials to prevent unauthorized access. Common materials include reinforced paper, plastic, or laminated films.
Self-Sealing Mechanism: A tamper-evident envelope typically has a built-in sealing feature that, once broken, cannot be resealed without leaving evidence of tampering.
Compliance with Standards: Many tamper-evident envelopes are designed to meet industry-specific standards, including those for shipping valuable items, financial documents, and legal papers. For example, the ISO 9001 standard may apply to manufacturing processes for tamper-evident envelopes.
How to Tell if a Seal Has Been Tampered With?
One of the main functions of a tamper-evident envelope is to allow recipients to easily determine if the envelope has been tampered with. Here are some common signs to look for:
Signs of Tampering
Broken or Distorted Seals: Most tamper-evident envelopes feature seals that are broken when the envelope is opened. Check for any irregularities in the seal, such as distortion or a break in the adhesive.
Visible Ink Changes: Some envelopes have security ink that changes color or forms visible patterns when tampered with. If the envelope shows signs of these changes, it has likely been opened or tampered with.
Torn or Damaged Edges: If the envelope’s edges appear torn, scratched, or damaged, it may indicate that it has been forcibly opened.
Residual Marks or Stickiness: A tamper-evident envelope may leave adhesive residue or marks if someone has tried to reseal it, making it easy to spot potential tampering.
What Is the Purpose of a Security Envelope?
The primary purpose of a security envelope is to protect the contents inside from unauthorized access and tampering. Security envelopes are essential in many industries and applications, particularly where confidential information, money, or high-value items are being transported.
Key Purposes of Security Envelopes
Protection of Sensitive Information: Security envelopes are often used in the legal, financial, and medical industries to ensure that documents and records are not tampered with during transit.
Cash Transportation: They are commonly used to transport money, including currency and checks, to ensure that the contents are not stolen or tampered with.
Preventing Fraud: Tamper-evident envelopes help prevent fraud by making it immediately obvious if an envelope has been opened without authorization.
Complying with Industry Regulations: In industries like pharmaceuticals, law enforcement, and banking, tamper-evident envelopes help comply with regulations for secure handling and transportation of sensitive materials.
What Are Examples of Tamper Detection?
Tamper detection is a critical feature of tamper-evident envelopes. Here are some examples of tamper detection methods:
Common Tamper Detection Techniques
Tamper-Evident Tape: This tape leaves a visible mark or color change if it is removed or disturbed, making it easy to spot tampering.
Security Ink: Some envelopes use special security ink that changes color or forms patterns when tampered with, making any attempt at tampering easy to detect.
Barcodes or RFID Tags: Modern tamper-evident envelopes may include RFID tags or barcodes that help track the envelope and detect any tampering during transit.
Tear Strips: Some envelopes feature tear strips that break when the envelope is opened, making it clear that the envelope has been compromised.
Conclusion
Tamper-evident envelopes are an essential tool for protecting sensitive information and valuable items during transit. By utilizing special features like tamper-evident seals, security tape, and tamper detection methods, these envelopes ensure that any unauthorized access is immediately visible. Whether you’re dealing with legal documents, financial transactions, or valuable goods, tamper-evident envelopes provide a critical layer of security.
If you need to ensure the safe transport of your sensitive materials, investing in tamper-evident envelopes is a smart choice. Not only do they offer peace of mind, but they also help you comply with industry standards and regulations.
Frequently Asked Questions
What is a tamper-evident envelope?
A tamper-evident envelope is a security envelope fitted with a specialised adhesive seal that leaves a permanent void pattern or message if anyone attempts to open it. They are used to secure documents, cash, keys, and other sensitive items where proof of unopened delivery is required.
How can you tell if a tamper-evident envelope has been opened?
Once the seal is broken, a tamper-evident envelope displays a permanent ‘VOID’ or ‘OPENED’ pattern on both the envelope and the adhesive strip. This mark cannot be reversed or concealed, providing immediate visual evidence of tampering.
What are the main uses of tamper-evident envelopes?
Tamper-evident envelopes are used in banking for cash and cheque deposits, in legal and government settings for confidential documents, in healthcare for patient records and specimens, and in retail for gift cards and vouchers. Any application requiring proof of sealed delivery benefits from their use.
Are tamper-evident envelopes the same as security bags?
Not exactly. Tamper-evident envelopes are typically flat, document-sized, and made from paper or thin film. Security bags are usually larger, made from heavier polyethylene, and designed for bulkier items like cash bundles, coins, or evidence. Both use tamper-evident seals but serve different applications.
TL;DR: ICAO-listed STEBs are the only bags authorised to carry duty-free liquids through international airport transfer security. Adsure Packaging is a listed manufacturer of ICAO-compliant STEBs, supplying airports and duty-free retailers worldwide.
Introduction
In the world of aviation security, ensuring the safe transport of goods is critical. One of the most vital innovations in this area has been the development of ICAO-listed STEBs (Security Tamper-Evident Bags). These bags play an essential role in the transportation of duty-free goods and high-value items, ensuring that they are secure and tamper-proof throughout their journey. In this blog post, we will explore the importance of ICAO-listed STEBs and why they are the gold standard in aviation security.
What is an ICAO-Listed STEB?
ICAO (International Civil Aviation Organization) sets the global standard for aviation security, and a STEB is a specially designed bag that complies with ICAO’s requirements for secure transport. These bags are tamper-evident, meaning any attempt to open or alter the contents will be immediately noticeable. ICAO certification ensures that the bags meet stringent safety and security standards, which makes them ideal for use in airports, duty-free shops, and by law enforcement agencies around the world.
The Advantages of ICAO-Listed STEBs
Tamper-Evident Security: The bags are designed to clearly show if any tampering has occurred, providing an additional layer of security for both goods and passengers.
Compliance with ICAO Standards: ICAO-listed bags are rigorously tested to ensure they meet international security standards. This provides peace of mind to airports, security agencies, and businesses alike.
Global Recognition: As ICAO sets the standards for aviation security worldwide, using ICAO-listed STEBs ensures that the products comply with the highest level of safety and security recognized across international borders.
Protection for Duty-Free Goods: ICAO STEBs are commonly used to secure duty-free items that are transported internationally. These bags ensure that goods are not tampered with during transit, preventing potential theft or loss.
Why ICAO-Listed STEBs Matter
Unlike some other products that may not have the required certifications, ICAO-listed STEBs provide verifiable compliance, ensuring that your products or goods are transported safely and securely across borders. Choosing ICAO-listed STEBs over non-certified alternatives is crucial, especially when dealing with high-value or regulated goods such as pharmaceuticals, electronics, and currency.
The Benefits of Adsure’s ICAO-Listed STEBs
Pioneers in the Market: Adsure Packaging is one of the first companies in Asia to offer ICAO-listed STEBs, and we have been a leader in both online and offline sales of these security bags. This experience ensures that our products are not only compliant but also of the highest quality.
Innovative Solutions: Our ICAO-listed STEBs come with advanced security features, such as clear evidence of tampering, which gives users confidence in the safety of their items.
Trusted by the Industry: As a company that specializes in tamper-evident security packaging, we offer products that meet and exceed the requirements of industries worldwide, from airports to law enforcement and beyond.
Conclusion
In today’s globalized world, the need for secure transport of goods has never been more important. ICAO-listed STEBs are the ultimate solution for ensuring that duty-free and other high-value items are protected throughout their journey. At Adsure Packaging, we are proud to be pioneers in this field, providing the highest quality, ICAO-listed tamper-evident bags. Trust in our expertise and choose the bags that meet the gold standard in aviation security.
Frequently Asked Questions
What does ICAO-listed mean for STEBs manufacturers?
ICAO-listed means a manufacturer’s STEBs have been evaluated and approved for inclusion on the ICAO list of compliant security bag suppliers. Airlines and airports are required to accept only STEBs from listed manufacturers. Adsure Packaging is a listed manufacturer of ICAO-compliant STEBs.
Why are STEBs required for duty-free liquids at airports?
ICAO regulations prohibit liquids over 100ml in carry-on luggage, but allow duty-free purchases if they are sealed in a tamper-evident STEB with a receipt visible from outside. The STEB proves the item was purchased after security screening and has not been tampered with during transit.
How long are ICAO STEBs valid?
ICAO STEBs do not have a fixed expiry date, but they must remain sealed and undamaged throughout the journey. If the bag is opened or the seal is broken at any point, the contents will be confiscated at the next security checkpoint. Always keep the original receipt inside the bag.
Can any bag be used as a STEB at airports?
No. Only bags from ICAO-listed manufacturers are accepted as STEBs at international airports. Standard plastic bags or non-compliant security bags will be rejected at transfer security checkpoints, and the contents may be confiscated regardless of their origin.
https://adsurepackaging.com/wp-content/uploads/2025/11/duty-free-bag.jpg10241024administratorhttps://adsurepackaging.com/wp-content/uploads/2017/10/adsure-logo-4.pngadministrator2025-11-25 06:57:302026-07-14 07:05:25The Importance of ICAO-Listed STEBs in Aviation Security
Shopping is often an essential part of travel. But should you complete your shopping at the city mall before heading to the airport, or wait until you’re past security? The differences between these two shopping experiences go far beyond location—they involve price, product selection, shopping experience, convenience, and after-sales support.
TL;DR: Airport duty-free shopping offers tax savings and exclusive travel products, but limited after-sales support. Mall shopping gives more variety and easier returns. For duty-free liquids bought at the airport, always check STEB requirements before international transfers.
Price Differences: Taxed vs. Duty-Free
At city malls, prices usually include local taxes. In the U.S., for example, sales tax ranges from 6% to 10%. Cigarettes are heavily taxed—often far more than regular goods. A pack of cigarettes in downtown New York can cost around $20, with nearly half of that being federal, state, and local taxes.
In contrast, at airport duty-free stores, the same pack might cost as little as $4. This shows the significant price advantage of duty-free shopping. For international travelers, duty-free goods are priced in USD and paid for directly at checkout—offering more convenience and clarity.
Product Variety and Experience: Wide Selection vs. Efficiency
Shopping malls offer a wide range of products and services, designed to create an immersive experience. You can try on makeup, compare styles, receive personalized recommendations, and enjoy loyalty points or promotional gifts. From fashion and skincare to electronics and food, malls cater to almost every shopping need.
Airport shopping, on the other hand, is built around speed and convenience. Duty-free stores focus on best-selling, high-tax items such as alcohol, tobacco, perfumes, and luxury goods. Some airports also sell local souvenirs or limited-edition products—great for last-minute purchases. While product options are fewer, the curated selection saves time, ideal for decisive shoppers.
Carrying Convenience: Can You Bring It Onboard?
While malls offer more choice, bringing liquid items on a flight can be tricky. Airlines usually limit carry-on liquids to 100ml per item, with a total limit of 1 liter. Without checked baggage, larger liquid purchases may be off-limits.
Airport duty-free shops solve this with Security Tamper-Evident Bags (STEBs). These transparent bags are sealed and labeled with your flight info, making them compliant with airline rules. Always ensure liquids are properly sealed and keep the receipt to avoid issues during your journey.
After-Sales Support: Peace of Mind Matters
Malls generally provide better after-sales support, especially in brand-owned stores. Clear return and exchange policies mean you can easily get help if something goes wrong.
By contrast, airport purchases are often final. Once you leave the country, returning or exchanging items can be nearly impossible. That’s why it’s crucial to double-check product details, prices, and packaging before completing a purchase.
Making the Right Choice: It Depends on Your Needs
If you value variety, personalized service, and strong after-sales support, city malls are the way to go—perfect for a planned shopping trip where you can take your time exploring options. Just be prepared to pay taxes, and in some cases, navigate a refund process.
If you want to save money, make a last-minute purchase, or avoid checking luggage, airport shopping has a clear advantage. It’s especially handy for buying perfumes, alcohol, and other highly taxed goods, with the bonus of easy onboard handling.
Frequently Asked Questions
Is airport duty-free shopping always cheaper than mall shopping?
Not always. Duty-free prices are lower because VAT and import duties are removed, but airport retailers add a premium for the captive audience and high rents. For alcohol, tobacco, and luxury cosmetics, duty-free is usually cheaper. For electronics and everyday goods, mall prices are often competitive or lower.
Can you return duty-free purchases?
Returns policies for duty-free purchases are generally more restrictive than mall shopping. Most airport duty-free stores do not accept returns once you have passed through security or left the country. Always check the return policy before purchasing, especially for high-value items.
Do you need a STEB bag for duty-free liquids on connecting flights?
Yes. If you are travelling on a connecting international flight, duty-free liquids must be sealed in an ICAO-compliant STEB (Security Tamper-Evident Bag) with the receipt visible inside. Without a STEB, liquids over 100ml may be confiscated at the transfer security checkpoint.
What is the 100ml liquid rule for airport carry-on?
Most international airports follow the ICAO rule limiting liquids, aerosols, and gels in carry-on luggage to containers of 100ml or less, all placed in a single transparent resealable bag of up to one litre. Duty-free liquids purchased after security in a sealed STEB are exempt from this limit.
https://adsurepackaging.com/wp-content/uploads/2025/05/Comparison-of-cigarette-prices-between-airports-and-shopping-malls-e1749022990292.png472733administratorhttps://adsurepackaging.com/wp-content/uploads/2017/10/adsure-logo-4.pngadministrator2025-05-28 08:02:102026-07-14 07:05:34Airport Shopping vs. Mall Shopping: Do You Really Know the Difference?
Tamper Evident Bags are used for different applications such as Banks,CIT Companies,Retail Chain Stores,Law Enforcement Departments,Casinos and so on.
Tamper Evident Bags are ideal for multiple applications.They need to secure deposit, personal property, confidential documents, forensic evidence, duty free shopping and so on.
Banks, CIT Companies, Finance Industry, Retail Chain Stores , will use this tamper evident bag to secure their deposit during cash in transit.
They also call these tamper evident bag bank deposit bag, security money bags, and safe bags.
Law Enforcement Agencies like Ministry, Police, Customs, and Prison will use these tamper evident bags for forensic evidence or some sensitive documents.
Casinos will use these tamper evident bags for Casino chips.
Election will use these tamper proof bags for voting booths, polling location and poll workers.
With convenient and secure solutions for protecting election ballot, cards, data and supplies during storage and transport.
Education departments will use it to secure the sample papers, test papers and question papers during storage and transport for National Examination.
Each bag is tamper evident. When someone tries to take out the item inside by improper way, it will show tamper evidence.
No one can take out the item without any evidence.
Normally, every tamper evident bags will have barcode and serial number for track and trace.
It can also customized with white write-on Information Panel, multiple tear-off receipt, tamper evident level, multiple compartments.
It also can print with your brand name and your design.
For tamper evident level, it all depends on your item value and your budget.
If your item value is very high and you need high tamper evident level.
In today’s world, where security is paramount, ensuring the safety of sensitive information during transit is critical. Whether it’s important documents, cash, or valuable items, protecting these from tampering is essential. This is where tamper-evident envelopes come into play. These specially designed envelopes offer a level of protection that makes it easy to spot if a package has been tampered with. In this article, we will dive into everything you need to know about tamper-evident envelopes, including their purpose, how to detect tampering, and the requirements they must meet.
