Securing Global Supply Chains, One Seal at a Time.
CHNSEAL manufactures ISO 17712 high-security bolt seals, cable seals, indicative seals, and intelligent RFID solutions — trusted by logistics, customs, and utilities across the world for over 30 years.
Security Seals for Every Application
From high-security container bolt seals to intelligent RFID tracking, our catalog covers every link in your supply chain — fully customizable with serial numbering, barcodes, color coding, and laser marking.
Bolt Seals
ISO 17712 high-security bolt seals for containers, trailers, and international cargo transportation.
View categoryCable Seals
Adjustable galvanized cable seals for flexible, tamper-evident cargo and asset protection.
View categoryIndicative Seals
Pull-tight, fixed-length plastic and meter seals for cost-effective tamper indication.
View categoryPadlock Seals
Single-use padlock seals for secure sealing of smaller applications and equipment.
View categoryMetal Strap Seals
Galvanized steel strap seals for durable tamper-evident protection in transport.
View categoryBarrier Seals
Heavy-duty hardened carbon steel barrier seals for maximum physical cargo security.
View categoryRFID Security Seals
Intelligent cable seals combining physical security with RFID tracking for full asset visibility.
View categoryNot Sure Which Seal?
Browse our industry-specific recommendations and find the right security solution for your application.
Browse industriesFactory-Direct Manufacturing with Full Customization
As a vertically integrated manufacturer with 30+ years of engineering expertise, we deliver security seals built to your exact specification — from bespoke marking to intelligent RFID encoding — without the middleman markup.
ISO 17712 Certified High-Security
Bolt and barrier seals meet international high-security standards for customs and border protection.
Full OEM / ODM Customization
Serial numbering, barcodes, QR codes, color coding, laser marking, and custom logo embossing.
Intelligent & RFID-Ready
NFC and RFID-enabled seals for digital traceability and supply chain visibility.
Digital Manufacturing & QC Traceability
Smart production lines with end-to-end quality traceability for consistent, reliable output.
Trusted Across Critical Sectors
From ocean containers to smart meters, CHNSEAL solutions protect cargo, assets, and infrastructure across the world's most demanding industries.
Logistics & Transport
Ocean containers, trailers, rail, courier bags.
Customs & Government
Border protection, inspection, evidence security.
Utilities & Energy
Electricity, water, and gas meter security.
Airlines & Aviation
Catering trolleys, duty-free, security bags.
Oil & Gas
Valves, pipelines, tank trucks, terminals.
E-Commerce & Retail
Fulfillment, last-mile, premium authentication.
Pharma & Healthcare
Medical carts, sample transport, labs.
Food & Beverage
Cold chain, distribution, catering operations.
Three Decades of Building Trust
From a small workshop in Wenzhou to a globally recognized manufacturing enterprise — every milestone rooted in precision, integrity, and continuous improvement.
Foundation in Wenzhou
Began early-stage product development and domestic market exploration in tamper-evident security.
Manufacturing Expansion
Relocated to Huangshan to support large-scale production and long-term industrial growth.
Trusted for Customs
Products adopted for customs applications, demonstrating trusted security and compliance.
Smart Security Innovation
Introduced electronic and NFC-enabled security seal technologies for traceability.
Digital Transformation
Invested in intelligent manufacturing for enhanced efficiency, traceability, and quality.
Global Growth
Serving customers across worldwide markets with certified, reliable, scalable solutions.
Case Studies from the Field
Real-world deployments where CHNSEAL solutions improved security, traceability, and operational reliability.
Securing High-Volume Express Operations
A major express network required fast, tamper-evident sealing for transport bags and roll cages nationwide. CHNSEAL supplied customized pull-tight seals with serial numbering and barcodes — improving accountability and chain-of-custody.
Supporting Customs Cargo Security
High-security sealing for import/export cargo inspection ensuring container integrity across the international supply chain with tamper evidence and unique identification.
Protecting Critical Utility Infrastructure
Reliable tamper-evident protection for electricity metering systems and field equipment across a large-scale service network — preventing unauthorized access and detecting tampering.
Securing Premium Fulfillment
High-value merchandise requires secure handling through fulfillment, warehousing, and last-mile distribution. Serialized seal systems improved inventory control and customer confidence.
From Idea to Delivery, Seamlessly
A transparent, end-to-end OEM/ODM process that turns your security requirement into a delivered, quality-checked product.
Idea & Requirement
Share your application, volume, and customization needs with our team.
Design & Sample
We engineer a solution and provide samples for your evaluation and approval.
Quotation & Production
Transparent pricing, then manufacturing on our digital production lines.
QC, Packing & Delivery
End-to-end quality traceability, secure packing, and reliable global shipping.
Try Before You Buy — Free of Cost
Sign up and we'll ship a curated sample kit of CHNSEAL security seals directly to your door, free of charge. Experience the quality, marking, and tamper-evidence firsthand.
Ready to Secure Your Supply Chain?
Get a personalized quote or request free samples today. Our security specialists respond within one business day.