What Are STEB Bags?
A STEB (Security Tamper-Evident Bag), is a security packaging bag designed to show clear, irreversible evidence when opened or tampered with.
It is widely used for airport duty-free liquids, cash handling, evidence storage, medical samples, and other high-value or regulated items that require secure transport and traceability.
| Security Feature | Function | Typical Use |
|---|---|---|
| VOID Adhesive Seal | Reveals “VOID,” “OPENED,” or custom warning text after peeling | Duty-free goods, documents, electronics |
| Hot-Melt Adhesive Seal | Creates a strong one-piece seal that must be destroyed to open | Cash transport, banking, evidence bags |
| Security Indicators | Shows temperature, light, or handling changes when required | Medical samples, pharmaceuticals, sensitive goods |
STEB Bag Applications
STEB bags were first developed for airport duty-free liquid security, but the same tamper-evident structure is now used in cash handling, law enforcement, healthcare, education, and other regulated sectors.
| Industry | Main Use | Key Security Need |
|---|---|---|
| Airports & Duty-Free | Liquids, perfume, wine, luxury goods | Transfer security and visible tamper evidence |
| Banking & Cash Handling | Cash transport and branch transfers | Serial tracking and theft prevention |
| Law Enforcement | Evidence, narcotics, documents | Chain-of-custody protection |
| Healthcare & Pharma | Samples, drugs, cold-chain items | Integrity, traceability, and compliance |
| Elections & Education | Ballots, exam papers, confidential files | Controlled access and anti-tampering |
STEB bags can be customized by material, size, transparency, printing, and traceability system. For B2B buyers, customization is mainly used to match product value, privacy level, inspection needs, and compliance requirements.
| Customization Area | Options | Typical Use |
|---|---|---|
| Material | LDPE, co-extruded film, reinforced film | Standard duty-free goods, sensitive samples, fragile items |
| Size | Mini, standard, extra-large, padded sizes | Jewelry, cosmetics, documents, industrial components |
| Transparency | Transparent, semi-transparent, opaque | Visual inspection, privacy protection, confidential contents |
| Traceability | Barcode, serial number, QR code, batch data | Airport retail, pharma, banking, evidence handling |
Watch this video to see how tamper-evident bags work in real applications, including security sealing, VOID evidence, writable panels, and custom bag structures.
Need custom STEB bags for duty-free, banking, healthcare, or evidence handling? Contact EcoSecurityTape with your size, material, printing, and traceability requirements.
Email: info@ecosecuritytape.com
WhatsApp: +1 615 480 2757
Why STEB Bags Matter
In regulated industries, package integrity is essential. A single tampering incident can lead to product loss, compliance violations, customer disputes, and reputational damage.
STEB bags provide visible tamper evidence and secure chain-of-custody protection throughout transportation and storage.
| Business Benefit | Why It Matters |
|---|---|
| Prevent Unauthorized Access | One-time security seals cannot be opened and resealed without visible evidence. |
| Ensure Regulatory Compliance | Meets ICAO requirements for duty-free liquids and supports regulated logistics. |
| Improve Traceability | Serial numbers, QR codes, and barcodes simplify tracking and auditing. |
| Reduce Product Loss | Discourages theft, substitution, and unauthorized handling during transport. |
| Protect Brand Reputation | Demonstrates secure handling and increases customer confidence. |
Whether you’re transporting duty-free goods, medical samples, cash, or confidential evidence, STEB bags provide a simple and reliable way to reduce risk, improve traceability, and meet security requirements.
Types of STEB Bags
Different STEB bags are usually selected by security level, sealing strength, traceability, and compliance requirements.
| Level | Type | Key Features | Best For |
|---|---|---|---|
| Level 1 | Basic Type | Standard LDPE film, basic tamper-evident seal, no barcode or serial number | Low-risk packaging, internal transfer, basic one-time sealing |
| Level 2 | Reinforced Adhesive Type | Stronger adhesive, visible OPENED/VOID indicator, improved seal strength | Aviation supplies, warehouse handling, medium-risk transport |
| Level 3 | Printed Standard Type | Custom printing, barcode, serial number, ICAO-style duty-free packaging support | Airport duty-free, customs parcels, cross-border logistics |
| Level 4 | Covert Printed Type | UV/IR ink, microtext, reinforced film, hidden anti-counterfeit features | Legal documents, confidential files, high-value shipments |
| Level 5 | High-Security Type | Dual VOID seals, encrypted serial numbers, DataMatrix code, high-strength material | Pharmaceuticals, finance, elections, police evidence, high-security logistics |
B2B Buyer’s Selection Guide
| Industry / Sector | Core Need | Recommended Level | Selection Note |
|---|---|---|---|
| Airport Duty-Free | ICAO-style compliance, duty-free liquid security | Level 3 | Suitable for airport retail, liquor, perfume, and cosmetics packaging |
| Electronics / Retail | Internal logistics, sample transfer, basic product security | Level 2 / Level 3 | Good for general cartons, retail packs, and non-confidential goods |
| Judicial / Law Firms | Confidential files, tamper evidence, anti-forgery protection | Level 4 | Covert printing and tear-resistant film improve evidence protection |
| Pharma / Banks / Election Bodies | High-risk handling, full traceability, regulatory compliance | Level 5 | Best for medicines, cash transport, ballots, and chain-of-custody control |
For cross-border logistics or duty-free use, Level 3 is usually sufficient. For high-value, regulated, or legally sensitive items, Level 4 or Level 5 is recommended.
Need help choosing the right STEB bag level? Contact EcoSecurityTape at info@ecosecuritytape.com or WhatsApp: +1 615 480 2757. We can provide samples and recommend a suitable structure based on your product, risk level, and compliance needs.
How Are STEB Bags Made?
The manufacturing of STEB bags (Security Tamper Evident Bags) is a sophisticated process that ensures product integrity, compliance, and traceability across international transit networks. Each bag is engineered for durability and tamper-resistance, making them an essential part of secure logistics.
Step-by-Step Overview:
Final Packaging & Traceability Log:
All tamper evident packaging is logged with unique production IDs, allowing full chain-of-custody audits for government, airports, and banking institutions.
Material Selection:
Manufacturers choose between HDPE, LDPE, or co-extruded multilayer films depending on the strength, opacity, and environmental resistance needed. Most duty free STEB bags use transparent co-extruded film with anti-tear properties.
Printing & Branding:
Custom printing includes company logos, barcodes, QR codes, sequential serial numbers, and ICAO/airport-specific identifiers. This enhances traceability and brand visibility for travel retail and customs.
Security Seal Application:
Tamper-evident sealing features such as VOID tape, destructible adhesives, or heat-sensitive ink are applied at the opening. For custom tamper proof bags, seals are often irreversible and leave visible evidence if breached.
Data Encoding (Optional):
Advanced bags may integrate RFID/NFC chips or UV-printed microtext to facilitate digital authentication or baggage reconciliation systems.
Quality Assurance & Compliance:
Every batch undergoes rigorous lab testing to verify:
Seal strength and break force
UV/IR ink visibility under scanners
Tamper response in high/low temperature
Moisture, pressure, and drop resistance
Who Uses STEB Bags?
STEB bags are relied upon globally by organizations that require strict control over high-value, sensitive, or regulated items. Their tamper-evident features, combined with traceable identifiers, make them indispensable across multiple sectors:
Airports & Duty-Free Retailers
These are the original users of STEB bags, especially for carrying tax-free liquids on international flights. Passengers must pack their LAGs (liquids, aerosols, and gels) in ICAO-compliant bags to pass through security. What is a duty free bag offers a full explanation of how these bags work and why they matter.
To explore our custom manufacturing options for ICAO-certified duty free STEB bags, visit our product page.
The alcohol section in airport duty-free stores gathers high-end alcoholic beverages from around the world, such as whisky, red wine, and champagne.
These products not only have a high unit price (for example, a single bottle of Yamazaki 18-Year-Old Whisky costs over 2,000 yuan),
but also have fragile bottles and are prone to liquid leakage.
During transportation, they also face the anti-counterfeiting risk of “being replaced with fake liquor inside the bottle”.
STEB security bags have been specially designed for the characteristics of alcoholic beverages:
the bag body is made of thickened food-grade PE material, which is puncture-resistant and anti-compression.
Even if it is collided during luggage check-in, it can prevent liquor leakage caused by bottle breakage;
the sealing part is equipped with a “VOID” tamper-proof tape.
Once opened, the tape will immediately show clear “Opened” words, which cannot be restored by re-adhesion,
fundamentally eliminating the problem of “refilling fake liquor into real bottles”.
Currently, Lotte Duty Free at Singapore Changi Airport and Shilla Duty Free at Incheon International Airport in South Korea have long used STEB security bags to package alcoholic products.
Take Changi Airport as an example: the Southeast Asian characteristic fruit wines (such as durian-flavored rum) sold in its duty-free stores once had customer complaints of “intact outer packaging but replaced liquor inside” due to their unique and highly recognizable bottle designs.
After switching to STEB security bags, through the combined solution of “exclusive QR code printed on the bag + tamper-proof seal”,
consumers can scan the code to check information such as the liquor’s outbound time and inspector.
At the same time, they can confirm that the product has not been tampered with through the irreversible tamper-proof mark.
The number of such complaints has decreased by 90% compared with before.
In addition, for large bottles of red wine (such as 750ml Bordeaux red wine), STEB also provides customized security bags with handles.
This not only makes it convenient for passengers to carry by hand, but also strengthens the brand image of the duty-free store through the brand logo printed on the handle.
Banks, CIT & Cash Handlers
In banking and secure logistics, tamper-evident bags are used for cash deposits, ATM cassette transfers, and inter-branch movements. These organizations require high-spec Level V STEB bags with serial numbers and UV ink to prevent unauthorized access and manipulation.
Law Enforcement & Legal Authorities
For criminal investigations, chain-of-custody is crucial. Custom tamper proof bags designed for police and forensic teams ensure that evidence remains untouched between collection and courtroom presentation.
Pharmaceutical Distributors & Hospitals
STEB bags are used to transport clinical trial samples, controlled drugs, and temperature-sensitive medications. Their traceability helps maintain regulatory compliance with ISO and FDA standards.
The pharmaceutical section in airport duty-free stores often sells various imported health supplements (such as Australian Swisse liver support tablets) and special-effect medicines (such as Japanese Ryukakusan).
These products have extremely high requirements for packaging “compliance” — they need to meet the regulations of drug regulatory authorities in various countries on “pharmaceutical packaging sealing” and “completeness of information labeling”.
At the same time, they must prevent medicines from getting damp and deteriorating due to packaging damage.
STEB security bags strictly comply with international pharmaceutical packaging standards:
the bag body is made of food-grade sterile material, which has passed authoritative certifications such as FDA and EU 10/2011, ensuring no harmful substances are released when in direct contact with medicines;
the sealing part adopts a dual-sealing method of “heat sealing + tamper-proof tape”, with the heat-sealing width reaching 5mm, which can effectively block the entry of air and moisture and extend the shelf life of medicines; the bag body is printed with clear information such as “for pharmaceutical packaging only” label, production date, shelf life, and storage conditions (e.g., “store in a cool place away from light at room temperature”), fully meeting the compliance requirements of customs in various countries for pharmaceutical packaging.
The pharmaceutical section of Jeju International Airport Duty Free Store in South Korea is a typical application scenario for STEB pharmaceutical-specific security bags.
The local Korean medicines sold in this duty-free store (such as Cheong Kwan Jang red ginseng paste and Korean ginseng tablets) are mostly in paste or tablet form, which have strict requirements for sealing.
After switching to STEB security bags, with the dual protection of heat sealing and tamper-proof tape, the shelf life of medicines in room temperature storage has been extended by 3 months compared with traditional packaging; at the same time, the trilingual instructions (Korean, Chinese, and English) printed on the bag body make it convenient for passengers from different countries to check the usage methods, further improving shopping convenience.
In addition, for medicines that need refrigeration (such as some imported probiotics), STEB can also be used with insulated bags.
The low-temperature resistance of the security bag (able to withstand environments from -10℃ to 40℃), can form “dual protection” with the insulated bag, ensuring that medicines are always in a suitable temperature environment during transportation.
Luxury & Fashion Brands
High-end goods like watches, perfumes, and jewelry are increasingly shipped using duty free STEB bags or similar tamper-evident packaging. These prevent loss, counterfeiting, or unauthorized repackaging in transit.
Government Agencies & Election Commissions
From sealed ballots to confidential records, many government units adopt STEB-compliant bags to meet audit, compliance, and transparency standards.
Key Features of STEB Bags
| Feature | Function | Benefit |
|---|---|---|
| Tamper-Evident Closure | VOID text, destructible adhesive, or irreversible seal changes upon tampering | Immediate visual alert of unauthorized access |
| Serialized Barcode / QR Code | Each bag has a unique, scannable identity linked to digital records | Enables secure tracking and prevents substitution or fraud |
| Reinforced Side Welds | Heat-sealed edges to enhance structural strength | Prevents edge-tearing or forced opening attempts |
| Writable Information Panel | White patch for handwriting seal ID, time, contents, etc. | Supports audit trails and chain-of-custody documentation |
| Custom Size & Print Options | OEM/ODM sizing, branding, or language support | Enhances brand recognition and improves operational fit |
| ICAO Compliance Markings | Printed compliance icons for international travel regulations | Ensures acceptance at global airport security checkpoints |
| UV Security Ink (Optional) | Invisible ink visible only under UV light | Adds covert authentication for higher-risk scenarios |
| Dual-Level Security Seals | Combines permanent seal + barcode or numbering | Multi-layered protection for sensitive contents |
| Transparent Front + Opaque Back | Allows inspection while hiding sensitive sender information | Balances visibility and discretion for customs or law enforcement |
| Recyclable / Eco-Friendly Films | HDPE, LDPE, or co-extruded recyclable materials | Meets sustainability goals and reduces plastic waste footprint |
✅ Tip: These features make STEB bags ideal for duty-free retailers, airports, banks, government agencies, and pharmaceutical firms that require reliable tamper-evident packaging and regulatory compliance.
Core Benefits of STEB Bags
| Benefit | Description | Value to B2B Buyers |
|---|---|---|
| Regulatory Compliance | Fully meets ICAO, TSA, and international customs packaging standards | Ensures smooth airport handling and avoids customs delays or penalties |
| Tamper Detection | VOID seal, destructible adhesive, or UV ink exposes interference attempts | Reduces inventory shrinkage, insider theft, and customer disputes |
| Chain-of-Custody Assurance | Serialized barcodes and writable fields enable traceable transactions | Critical for government, law enforcement, and financial institutions |
| Custom Branding | OEM/ODM printing, barcode integration, and color coding support | Reinforces brand identity and improves process efficiency |
| Bulk Order & OEM Friendly | Supports large-scale procurement and tailored designs | Suitable for global retailers, airport operators, and secure logistics |
| Secure International Transit | STEB bags accepted at airports worldwide for liquid duty-free transport | Enables safe and compliant passenger experience globally |
| Multi-Industry Use | Adaptable to retail, pharma, legal, banking, and aviation sectors | Helps standardize packaging across departments or global branches |
| Eco-Compliant Materials | Available in recyclable HDPE/LDPE or co-extruded eco films | Supports sustainability goals and aligns with green procurement initiatives |
💡Tips: When sourcing tamper-evident packaging, look for suppliers who offer certified STEB bags with customization, fast lead times, and experience in duty-free and law enforcement logistics. This ensures your packaging meets both compliance and operational demands.
How to Choose the Right STEB Bag Supplier
Selecting the right STEB bag supplier is essential for ensuring both compliance and operational efficiency—especially if you’re sourcing for sensitive industries like travel retail, finance, or pharmaceuticals. Here’s what to evaluate:
- Industry Experience: Work with a STEB bag supplier who has a solid track record serving high-security sectors such as banks, airport duty-free retailers, customs agencies, and pharmaceutical distributors. Experience in handling sensitive use cases ensures better alignment with your needs.
- Certifications & Compliance: A reputable supplier should meet international standards such as ISO 9001, REACH, and TSA/ICAO packaging compliance. These certifications prove their products are globally accepted and suitable for regulated environments.
- OEM/ODM Customization Options: Leading suppliers offer a full range of customizable duty free STEB bags, including multiple size options, company logo printing, multilingual messaging, and unique barcode or QR code serialization. This is crucial for maintaining your brand integrity and operational traceability.
- Scalable Production Capacity: Ensure your supplier can handle both bulk orders and small pilot batches. Ask about their average turnaround time and whether they provide expedited production services to accommodate time-sensitive shipments.
- Strict Quality Testing: Look for evidence of lab-tested durability, tamper resistance, and seal integrity. Bags should pass tensile strength and temperature resistance benchmarks to withstand international transport and rough handling.
- After-Sales Support & Documentation: A good STEB bag supplier will provide you with product datasheets, usage guidelines, and compliance documents required for customs or audits.
💼 Pro Tip: Build a long-term partnership with a supplier who not only delivers high-quality STEB bags but also provides consulting for product selection, samples for pilot testing, and logistics coordination for smooth international shipping.
Why Choose EcoSecurityTape for STEB Bags
At EcoSecurityTape, we’re more than just a STEB bag supplier—we’re your trusted partner in building secure, compliant, and scalable packaging solutions. Here’s why global brands, customs agencies, and travel retailers rely on us:
End-to-End Sourcing Support in China
We’re not just a manufacturer—we guide you through every step of the China sourcing process. From verifying upstream suppliers to arranging factory audits and coordinating mixed container shipments, we help reduce sourcing risks and save time for your procurement team.
Complete OEM/ODM Customization
Whether it’s a duty free STEB bag that meets ICAO airport guidelines or a high-spec bag for forensic use, we offer full customization:
- Bag dimensions
- Security level (Level I–V)
- Multilingual printing
- Unique serial numbers, QR codes, and branding
- Custom packaging & documentation
Small MOQ & Pilot-Friendly
We support low minimum order quantities, making us ideal for pilot projects, government tenders, or new market testing. Scale as you grow without overspending on inventory.
One-Stop Tamper-Evident Packaging Partner
Beyond STEB bags, we supply a full ecosystem of tamper-evident solutions—including security tapes, void labels, evidence seals, and anti-counterfeit stickers. This helps you consolidate sourcing and ensures consistency across your security packaging needs.
Proven Export Experience
We serve clients in over 30 countries, including Europe, the Middle East, Southeast Asia, and Latin America. Our export team handles customs paperwork, certificate requests (e.g., ISO 9001, REACH, MSDS), and multilingual communication to ensure smooth collaboration.
👉 Let’s secure your global supply chain. Contact us today to request OEM STEB bag samples, get a tailored quote, or discuss how we can optimize your travel retail packaging.
One-Stop Tamper-Evident Packaging Partner
Beyond STEB bags, we supply a full ecosystem of tamper-evident packaging solutions—including tamper-evident security bags, security tapes, void labels, and anti-counterfeit stickers. This helps you consolidate sourcing and ensures consistency across your security packaging needs.
FAQs About STEB Bags
Q1: What does STEB stand for?
STEB stands for Security Tamper Evident Bag, a specialized packaging solution designed to prevent unauthorized access. STEB bags are widely used in airports, banks, and legal sectors where high-integrity transport is required.
Q2: Can I customize the bag size, seal level, and barcode system?
Yes. We offer full OEM/ODM customization including bag dimensions, multi-language printing, tamper-evident seal levels (from Level I to Level V), barcode/QR integration, and even color-coded branding for travel retailers or law enforcement.
Q3: What’s the lead time for bulk or customized orders?
Standard lead time is 7–14 working days, depending on order volume and customization complexity. For time-sensitive needs (e.g., urgent airport restocks), expedited processing and global shipping are available.
Q4: Do STEB bags comply with airport security and customs regulations?
Absolutely. Our duty free STEB bags meet ICAO and TSA guidelines, and are used in international airport zones worldwide for tax-free liquid transport. Documentation can be provided for customs or compliance checks.
Q5: Are STEB bags environmentally friendly or recyclable?
Yes. Most of our STEB bags are produced using recyclable HDPE/LDPE materials, complying with RoHS, REACH, and sustainability standards. We can also provide eco-friendly options for environmentally conscious partners.
Q6: What’s the minimum order quantity (MOQ)?
Our low MOQ allows flexibility for both large procurement teams and pilot projects. Whether you’re an airport, government body, or brand distributor, we can tailor the order to your actual needs.
Q7: Can I include STEB bags in a consolidated order with other tamper-evident products?
Yes! We support full order consolidation. You can bundle your tamper-evident security tapes, labels, and STEB bags in one shipment to save logistics costs and streamline supply.
Final Thoughts
STEB bags are no longer optional—they’re essential. In an era of escalating security threats, regulatory scrutiny, and customer expectations, Security Tamper Evident Bags serve as a front-line defense against tampering, theft, and non-compliance. Whether you’re moving duty-free liquids through international airports, transferring large cash volumes, or securing forensic evidence, STEB bags ensure your packaging is both secure and accountable.
At EcoSecurityTape, we don’t just deliver bags—we deliver peace of mind.
- 🌍 Global Reach: We ship internationally and support travel retailers, airport operations, banks, and government agencies worldwide.
- 🎯 OEM & Small-Batch Customization: Whether you need 500 or 50,000 units, we tailor every order to your branding, sizing, and compliance needs.
- 📑 Regulatory Expertise: All our duty free STEB bags comply with ICAO, TSA, and customs standards, with certificates available on request.
- 🔒 End-to-End Anti-Counterfeit Solutions: From tamper evident tapes to security labels and custom seals, we support every stage of your supply chain security.
📦 Ready to secure your shipments and protect your brand?
👉 Request a free STEB bag sample or speak with a product consultant today to explore custom options tailored to your industry.
Focus on tamper evident packaging, free sample for test, small-batch MOQ, let’s have a talk.