Security seals are simple yet powerful tools that help companies discourage tampering, trace supply chain handling, and maintain compliance with international transport standards. According to industry reports, tamper evidence solutions can cut shrinkage and theft by measurable margins, especially in high-value and regulated sectors.
China remains one of the largest tamper evidence solutions hubs for seal production, with manufacturers supplying both domestic brands and multinational clients seeking durable, compliant products. In this article, we will showcase the top 10 security seal manufacturers in China for 2026, highlighting their capabilities.
Overview of China’s Security Seal Industry
Security seals are physical devices used to show tampering or unauthorized access. They are applied to containers, trucks, bags, meters, and storage units. Once broken or altered, the seal gives a clear visual warning. This helps protect goods during transport and storage, especially in global trade.
China plays a major role in the security seal industry. Its manufacturers supply large volumes to logistics firms, exporters, customs agents, and industrial clients worldwide. The country benefits from strong manufacturing capacity, flexible production, and the ability to meet international compliance standards such as ISO and C-TPAT.
Security seals come in several types, each designed for a specific risk level and use case. The common types of security seals include:
| Seal Type | Typical Use | Security Level |
|---|---|---|
| Plastic Seals | Courier bags, trucks, carts | Low to medium |
| Cable Seals | Shipping containers, railcars | High |
| Bolt Seals | Ocean containers | Very high |
| Metal Strip Seals | Meters, cabinets | Medium |
| Electronic Seals | High-value cargo tracking | Very high |
Chinese manufacturers often customize seals by size, strength, color, serial numbering, barcodes, or logos. This makes them suitable for both standard shipping and branded supply chains.
Top 10 Security Seal Manufacturers in China
The manufacturers listed below represent a cross-section of China’s security seal industry, ranging from large-scale exporters to specialized producers serving niche markets. Let’s see what sets each manufacturer apart and where they are best suited.
1. Shosky Security
- Business Type: Manufacturer
- Location: Dongguan, Guangdong, China
- Specialty: Tamper-evident seals, cable seals, bolt seals, security tapes
- Establishment Year: 2006
Shosky Security is a leading Chinese manufacturer of high-performance security seals designed to meet diverse tamper-evidence needs across industries such as logistics, aviation, banking, and retail. The manufacturer’s security seals help businesses secure shipments, containers, and high-value assets from unauthorized access and tampering.
The company produces a broad range of seal types, including plastic pull-tight seals with adjustable locking, heavy-duty bolt seals for container security, and ISO-compliant metal seals for international transport. Shosky also offers tamper-evident tapes and custom seal solutions for unique applications.
Each security seal is tested for strength, break point, and tamper visibility to match real-world performance expectations. Shosky’s in-house engineering ensures that seals trigger clear evidence when manipulated, enhancing loss prevention and audit traceability. We support custom logos, sequential numbering, and barcode printing, making our seals suitable for high-risk environments.
Manufacturer advantages:
- 18+ years of tamper-evident seal manufacturing
- 48-hour production for standard orders
- International shipping experience
- Bonds to low surface energy materials
- UV and holographic security features are available
- Sequential numbering and barcoding
- FDA/CE compliant materials
Shosky Security suits businesses that need dependable security seals for logistics, aviation, and banking use.
2. TSS (Shanghai Xinfan Industrial Corporation)
- Business Type: Manufacturer
- Location: Shanghai, China
- Specialty: ISO 17712 high security seals, RFID seals, smart logistics solutions
- Establishment Year: 2003
Shanghai Xinfan Industrial Corporation operates under the TSS brand as a leading high-security seal manufacturer with fully automated production lines. The company specializes in ISO 17712:2013 “H” compliant bolt seals and cable seals used by international shipping lines and container transport companies. Their 40,000 square meter factory houses over 100 automated and semi-automatic production machines.
TSS bolt seals feature anti-spin mechanisms that prevent tampering through high-rotation attempts. The locking systems use numbered bolts and bodies to prevent fraud through component replacement. Cable seals incorporate galvanized steel cables with diameters exceeding 3.5mm for C-TPAT compliance.
The company expanded beyond mechanical seals to include RFID-enabled security seals, cargo GPS trackers, and IoT platform integration. This allows clients to monitor seal status and cargo location in real-time through cloud-based systems. TSS serves airlines, customs terminals, shipping lines, postal services, banks, petrochemical companies, and pharmaceutical logistics operators.
Manufacturer advantages:
- 100+ automated production machines
- RFID and GPS tracker integration
- IoT platform for real-time monitoring
- Hundreds of proprietary molds
- Anti-spin and anti-tampering designs
- International shipping line supplier
- OEM customization services
TSS works well for large-scale logistics operators that require ISO-compliant high-security seals and advanced tracking options.
3. Wenzhou GCSEAL Co., Ltd.
- Business Type: Manufacturer
- Location: Wenzhou, Zhejiang, China
- Specialty: Bolt seals, cable seals, padlock seals, plastic seals
- Establishment Year: 2010
Wenzhou GCSEAL manufactures a comprehensive range of security seals, with 90% of components produced in-house at their own factory. The manufacturer specializes in heavy-duty barrier seals constructed from hardened carbon steel for high-value cargo transportation.
GS Seal’s product portfolio includes bolt seals with ISO 17712 compliance, cable seals for adjustable-length applications, plastic pull-tight seals with metal locking mechanisms, padlock seals, metal strap seals, and meter seals for utility applications.
Their plastic seals incorporate stainless steel locking mechanisms within polyethylene or polypropylene bodies. The pull-tight design features polymer teeth that fasten securely, with tensile strengths ranging from 98N to 409N depending on seal dimensions and construction. Cable seals use galvanized or stainless steel cables with customizable lengths for securing tanker valves, container doors, and trailer hatches.
Manufacturer advantages:
- Ultrasonic welding technology
- Stainless steel locking mechanisms
- Custom colors and marking
- Barcode and numbering systems
- Multiple seal type specialization
- Technical pre-sales support
- Wide shipping network
This manufacturer suits cargo and utility operators that need durable mechanical seals with consistent in-house quality control.
4. XingHui Seal Co., Ltd.
- Business Type: Manufacturer
- Location: Wenzhou, Zhejiang, China
- Specialty: Security seals, container seals, tamper‑proof seals, logistics seals
- Establishment Year: 2007
XingHui Seal operates from Wenzhou’s industrial zone, manufacturing security seals that cannot be unlocked once sealed. Their specialty lies in cable seals for petroleum transport, meter seals for utility applications, and container seals for international shipping.
The company manufactures both HF RFID seals and UHF RFID seals, enabling automated seal verification at checkpoints without manual inspection. Plastic seals from XingHui use secure locking chambers that grip the seal tail through one-way teeth, preventing reverse movement. Padlock seals combine PP, PC, or ABS plastic bodies with metal shackles for securing cabinets, drums, and in-flight service carts.
XingHui serves diverse sectors, including supermarkets, shipping companies, commodity inspection agencies, logistics providers, power utilities, customs offices, railway operations, and banking institutions. Their seals prevent larceny, detect confidence breaches, and provide tamper evidence across supply chains.
Manufacturer advantages:
- Sequential numbering support
- Barcoding options
- High visibility colors
- Polycarbonate meter seal construction
- Sealing wire compatibility
- One-way grip locking chambers
- OEM/ODM service available
XingHui fits organizations that rely on cable and meter seals for transport, utilities, and inspection workflows. It suits buyers who need RFID capability and standardized numbering for audit control.
5. Shijiazhuang Jubilee Security Seals Factory
- Business Type: Manufacturer
- Location: Shijiazhuang, Hebei Province, China
- Specialty: Container seals, meter seals, plastic security seals
- Establishment Year: 1998
Shijiazhuang Jubilee Security Seals Factory is a security seal manufacturer with expertise in tamper‑proof seal solutions for industrial, transportation, and utility sectors. Their products are designed to prevent unauthorized access while ensuring durable performance in harsh environments.
The manufacturer’s container seals and meter seals are engineered with materials that withstand outdoor conditions and clearly signal any tampering attempts. Jubilee’s plastic security seals provide a cost‑effective option for lower‑risk applications while still offering visible tamper evidence.
Each batch of seals undergoes testing for tensile strength, locking mechanism stability, and break patterns to maintain reliability. The manufacturer also supports custom laser‑printed logos, serial numbers, and barcodes for tracking and audit trails. Jubilee’s manufacturing process emphasizes performance and affordability for a range of operational needs.
Manufacturer advantages:
- Cost‑effective plastic security seals
- Serial and barcode printing available
- Strong lock stability
- Clear tamper evidence
- Utility and transport applications
- Fast response times
- Technical pre‑sales guidance
This factory is suitable for cost-sensitive projects that still require visible tamper detection. It works well for utilities, transport firms, and regional distributors with steady volume needs.
6. Shandong Junchuang Lock Industry Co., Ltd.
- Business Type: Manufacturer
- Location: Dezhou, Shandong Province, China
- Specialty: Plastic seals, bolt seals, cable seals, padlocks, metal seals
- Establishment Year: 1990
Shandong Junchuang Lock Industry is a seasoned manufacturer of security seals and related hardware with over three decades of experience. Their security seal portfolio includes plastic pull‑tight seals, heavy‑duty bolt seals, and tamper‑evident cable seals designed for logistics, transport, and property security use.
Junchuang’s bolt and cable seals are built to provide clear evidence of interference, with materials that resist environmental wear and common break‑in attempts. The seals serve container sealing, warehouse protection, and cargo doors where unauthorized access must be instantly visible.
In addition to basic sealing solutions, Junchuang offers metal security seals that deliver high tensile strength and padlock seals that combine tamper evidence with secure locking. Their products are often selected by freight forwarders, warehouses, and transport operators that require robust, traceable seal performance.
Manufacturer advantages:
- Anti-rotation mechanisms
- Numbered component tracking
- Irreversible locking systems
- Multiple security level options
- Custom manufacturing capabilities
- Shandong cost-effective production
- International specification compliance
This factory is suited to freight forwarders, warehouses, and transport operators who need seals that clearly show tampering and provide traceable security.
7. Lions Security Seal Ltd.
- Business Type: Manufacturer
- Location: Changzhou, Jiangsu Province, China
- Specialty: Security seals for logistics, transport, and utility applications
- Establishment Year: 2005
Lions Security Seal manufactures a diverse range of tamper-evident sealing solutions for cargo protection, utility metering, and asset security. The company produces seals designed for visual tamper detection, with break-away components or irreversible locking that clearly indicate unauthorized access attempts.
The manufacturer’s bolt seal line features large identification flags that accommodate laser marking, barcode printing, or sequential numbering for tracking purposes. Cable seals incorporate aluminum or plastic locking bodies with steel cables ranging from 1.8mm to 5.0mm in diameter, depending on the required security level.
Lions Security Seal produces meter seals specifically for electric, water, and gas utility applications where seal longevity and weather resistance are essential. Plastic seals from Lions include pull-tight designs with permanent locking.
Manufacturer advantages:
- Large identification flag space
- Matching serial number systems
- Multi-year weather resistance
- Internal ratchet mechanisms
- Color and marking customization
- Multi-industry serving capability
- Function and strength verification
This manufacturer fits businesses that need flexible marking space and multiple seal formats across logistics and utilities. It suits buyers who want simple, reliable tamper evidence without complex systems.
8. Zctower Security Seals
- Business Type: Manufacturer
- Location: Fuzhou, Fujian Province, China
- Specialty: Container seals, security seals, tamper-evident solutions
- Establishment Year: 1998
Zctower Security Seals operates from Fuzhou, manufacturing security sealing products for container transport and cargo protection. The company produces seals meeting C-TPAT (Customs-Trade Partnership Against Terrorism) requirements, supporting secure supply chain initiatives.
The manufacturer produces bolt seals with ABS polymer barrels housing carbon steel locking mechanisms. The combination provides cost-effective security while maintaining sufficient strength to deter casual tampering. Laser marking on seal surfaces creates permanent identification that resists environmental exposure and handling wear.
Zctower’s cable seals use steel cables crimped into aluminum or plastic locking heads, with adjustable lengths accommodating various container door configurations. Plastic pull-tight seals from Zctower incorporate metal locking clips or stainless steel internal mechanisms, depending on the required security level. Their production capacity supports large-volume orders with consistent delivery schedules.
Manufacturer advantages:
- Permanent laser marking
- Adjustable cable lengths
- Metal locking clip options
- One-way ratchet systems
- QR code integration capability
- Large-volume production capacity
- Quality documentation support
Zctower works well for container and cargo operators that require C-TPAT-aligned seals and high-volume production. It is suitable for companies prioritizing traceable marking and steady lead times.
9. Mega Fortris China
- Business Type: Manufacturer (China plant) / Global Corporation (HQ Malaysia)
- Location: Manufacturing facility in China; Headquarters in Selangor, Malaysia
- Specialty: Tamper-evident seals, security labels, supply chain security
- Establishment Year: 1996 (parent company)
Mega Fortris operates manufacturing facilities in China as part of its global production network serving Asia-Pacific, European, and American markets. The company specializes in comprehensive supply chain security solutions combining physical seals with digital tracking technologies. Their China plant produces mechanical security seals alongside tamper-evident labels and security packaging materials.
Mega Fortris emphasizes sustainability in operations, using recyclable materials where security requirements allow and implementing energy-efficient manufacturing processes. The company’s seal designs incorporate features supporting circular economy principles while maintaining tamper-evident properties.
Their customer base includes logistics companies, transport operators, energy sector clients, pharmaceutical distributors, and banking institutions requiring high-assurance security. Technical support teams work with clients to design security protocols incorporating appropriate seal types, tracking systems, and verification procedures. The China facility supports rapid fulfillment for Asian customers while connecting to Mega Fortris’s global distribution network.
Manufacturer advantages:
- Global corporation with China manufacturing
- ISO 17712 certified production
- Six Sigma quality methodologies
- Automated assembly and serialization
- Sustainability focus in operations
- Digital tracking integration
- Multi-region distribution network
This manufacturer suits global supply chains that combine physical seals with structured security programs. It is a good fit for companies that value standardized quality and international compliance support.
10. Haoshi Security Seal Factory
- Business Type: Manufacturer
- Location: Wenzhou, Zhejiang, China
- Specialty: Bolt seals, cable seals, plastic seals, padlock seals, metal strap seals
- Establishment Year: 1995
Haoshi Security Seals Factory is a professional security seal manufacturer specializing in a broad range of tamper‑evident sealing solutions for logistics, cargo, container, and industrial applications. Their products are engineered to provide visual evidence of tampering while maintaining reliable performance in demanding conditions.
The company’s bolt seals are constructed with high‑strength materials to withstand cutting and forced entry attempts, ideal for international freight and container sealing. Their cable seals combine steel core cables with tamper‑responsive locking for irregular sealing points.
Haoshi’s plastic and padlock seals offer cost‑effective options for routine operational sealing needs where visual evidence of interference is needed. Clients often choose Haoshi seals for logistics distribution centers, freight forwarding companies, and storage facilities where tamper alerts must be clear and dependable.
Manufacturer advantages:
- Customized numbering and printing
- Durable locking mechanisms
- Clear tamper-evident design
- High visibility colors
- Quality checks on performance
- Export readiness
- Upfront pricing
Haoshi fits routine logistics and cargo operations that need clear tamper alerts at manufacturer pricing. It suits buyers looking for practical seal designs with export-ready production.
How to Choose the Right Security Seal Manufacturer in China?
Selecting the right security seal manufacturer in China depends on how well the supplier matches your operational needs. Not all seals serve the same purpose, and not all factories operate at the same level of control or consistency.
- Match the seal to the application: Start by defining where and how the seal will be used. High-risk cargo and container transport require ISO-compliant bolt or cable seals. Lower-risk use cases, such as meters or courier bags, work with plastic or metal strip seals. A capable manufacturer should guide selection based on risk, not price alone.
- Check manufacturing control: Reliable suppliers handle molding, locking mechanisms, and marking in-house. This improves consistency across large orders and reduces quality variation. In-house serial numbering and barcoding also improve traceability.
- Confirm compliance and testing: Look for experience with ISO 17712, C-TPAT, or other relevant standards. Manufacturers should explain how seals are tested for strength, break behavior, and tamper visibility, with supporting documentation available.
If you partner with a manufacturer that meets these criteria helps reduce security gaps and strengthens supply chain control.
FAQs
1. Are Chinese security seals compliant with international standards?
Many manufacturers meet ISO 17712 and C-TPAT requirements. Compliance depends on the specific factory and seal type.
2. What are security seals used for?
Security seals show if a container, bag, or meter has been tampered with. They protect goods during transport and storage.
3. What is the difference between bolt seals and cable seals?
Bolt seals provide higher security for containers. Cable seals offer flexibility for irregular locking points.
4. How do I know if a seal is reliable?
Look for ISO or C-TPAT compliance and testing documentation. Reliable seals break visibly and prevent reuse.
5. Can seals be customized?
Yes, seals can feature logos, sequential numbers, barcodes, and colors. Customization improves traceability and brand security.
Conclusion
China’s security seal manufacturers provide options for every level of risk, from low-security plastic seals to high-security ISO-compliant bolt and cable seals. Selecting a manufacturer that matches your operational and regulatory needs ensures tamper evidence is reliable and traceable.
Working with experienced suppliers helps maintain consistent quality, meet compliance standards, and protect valuable goods during transport. Choosing carefully reduces risk and strengthens your supply chain security.
Protect Your Shipments with Shosky’s Security Seals
Shosky Security has been supplying high-quality tamper-evident seals since 2006. With custom logos, sequential numbering, and barcode printing, we ensure every seal meets your unique requirements. Connect with us today to secure your shipments and assets with reliable, high-quality tamper-evident solutions.
