Anti-Tamper Disposable High Security Container Bolt Seal for truck container door lock 

Widely used in a variety of logistics and cargo security scenarios, our bolt seal is primarily designed for locking ISO-standard shipping containers, ensuring compliance with international transportation requirements. It serves as a reliable solution for maintaining cargo integrity across global supply chains.

The seal is also suitable for securing truck doors, van trucks, tank trucks, trailers, railway wagons, and freight cars, providing effective protection against tampering and unauthorized access during transit. Its durability makes it an excellent choice for protecting valuable and sensitive goods such as electronics, pharmaceuticals, chemicals, and luxury items.

In addition, it is commonly used in customs-controlled shipments and C-TPAT certified logistics systems, helping improve security management and traceability. Regardless of whether goods are transported by sea, road, or air, our bolt seal ensures stable and dependable cargo protection.

High security structure – Manufactured from high-strength steel with a solid locking mechanism, the seal effectively resists cutting, drilling, and prying, providing enhanced protection against forced entry.

Tamper evident – Any attempt to interfere with the seal will result in visible and permanent damage, allowing quick verification of cargo integrity throughout the supply chain.

Unique serial number – Each seal features a laser-printed code for unique identification, improving tracking accuracy and helping prevent unauthorized duplication.

One-time locking – Once applied, the seal cannot be reopened or reused. It must be cut off, ensuring any breach is clearly noticeable.

ISO 17712 certified – Fully compliant with ISO 17712 high-security standards, widely accepted for international shipping and customs inspections.

Weather resistant – Designed to perform reliably under harsh environmental conditions, including exposure to moisture, salt, and temperature changes.

Easy application – Quick and convenient locking process requires no additional tools, making it suitable for high-efficiency logistics operations.

Widely used – Suitable for containers, trucks, tankers, rail transport, and other cargo security applications across global logistics networks.

1.Q：What kind of company are we ?
A： Shandong Shengtang Intelligent Technology Co., Ltd. is a leading professional manufacturer of disposable security seals in China. Established in 2012, we have over 14 years of industry experience, supported by a 15,000㎡ modern factory, more than 200 skilled employees, and 450 advanced production machines, ensuring stable capacity and reliable global supply.Our main products include Plastic Seals, Bolt Seals, Cable Seals, Meter Seals, Padlock Seals, and Metal Seals Our products are exported to major global markets including Europe, North America, Southeast Asia, the Middle East, and South America.

2.Q：How can we guarantee products quality?
A: We implement a strict two-stage quality control system to ensure consistent and reliable product quality:
Pre-production samples are always provided for customer approval before mass production;
Final random inspection is conducted prior to shipment;

3.Q:what products can you buy from us?
A: We manufacture a full range of disposable security seals, including:
Plastic Seals, Cable Seals, Bolt Seals, Meter Seals, FRID Seals,Padlock Seals,Metal Strap Seals, Barrier Seals, Animal Ear Tags and others.
We also offer customized solutions, such as LOGO printing, laser serial numbering, barcodes, qrcode and special packaging if needed.

4. Q: Why should you buy from us not from other suppliers？
A：We have 14 years experiences, 300 sets of models with different styles , meet your different demands with fast delivery. All our material is environmental, and we won many honors from government.
We offer strong and flexible customization solutions for customers, helping customers create differentiated and competitive security seal products.
We have a comprehensive pre-sales service , In-Sales Service, and after-sales service system, to provide our customers with end-to-end services.

5.Q:Do you accept custom orders?
A: Yes. We provide comprehensive OEM & ODM customization services, including:
LOGO printing and unique serial numbering
Customized sizes, colors, materials, and packaging

6.Q:What certifications do you have?
A:We maintain a complete and internationally recognized certification system, including:
ISO 9001 – Quality Management System
ISO 14001 – Environmental Management System
ISO 45001 – Occupational Health & Safety Management System
ISO 17712 – High-Security Seal Certification
Third-party test reports from SGS and other authorized institutions