Heavy Duty Anti Tamper Proof Container Lock Factory Truck Security ABS Metal Bolt Seal with Barcode Container Door Bullet Seals

These container security seals are extensively used in shipping, intermodal transport, and ground logistics systems, offering reliable protection for ISO-standard containers, trailers, trucks, van trucks, tankers, and railway wagons. They are also widely applied in postal services, courier logistics, airline baggage handling, and equipment such as carts, trolleys, and food service units.

Designed to secure cargo trucks, trailers, and freight cars, the seals maintain cargo safety throughout transportation, even in demanding environments. Their high-strength construction ensures resistance to external forces, vibration, and extreme weather conditions encountered during long-haul journeys.

For enhanced security management, advanced models incorporate RFID technology or QR coding systems, enabling remote scanning and integration with GPS-based tracking platforms. This allows logistics operators to achieve real-time monitoring and full traceability across the supply chain.

Constructed from high-quality materials such as hardened steel or Q235 steel combined with ABS, these seals offer exceptional durability and tensile strength exceeding 700 kg. Each unit includes a permanently marked serial number and tamper-evident design, ensuring quick identification and visible evidence of interference.

Types – Bolt Seals:
Bolt seals are widely recognized as the preferred solution for high-security applications. Their robust steel structure and irreversible locking mechanism make them ideal for international shipping, high-value goods, hazardous materials, and shipments requiring strict customs compliance.

Low cost with durable metal parts & easy use service – Combining affordability with industrial-grade metal strength, this seal ensures reliable performance while being simple to apply, making it ideal for large-scale logistics usage.
Disposable security lock with anti-counterfeiting and tamper-proof features – Designed for one-time use, it effectively prevents unauthorized reuse or counterfeiting, while clearly showing any signs of tampering during transport.
Factory direct sales, customizable samples, strict quality control – Direct-from-factory supply ensures competitive pricing. We provide customized sample development and maintain strict quality control at every production stage.
Rich export experience with multiple transportation options – With strong export capability, we offer flexible shipping arrangements including maritime, air, and land transport, ensuring efficient global delivery.
Multiple international certifications including ISO17712 – Certified to ISO17712 and other international standards, ensuring the product meets global safety and logistics compliance requirements.
Exceptional tamper resistance – Constructed with high-tensile steel and reinforced locking design, it delivers strong resistance to forced entry and unauthorized manipulation.
Compliance with international standards – Fully compliant with ISO 17712:2013 and aligned with global customs security programs, ensuring smooth cross-border shipment processing.
Cost-effective security solution – Provides strong security protection at a competitive cost, with easy installation that reduces labor effort and improves operational efficiency.
Enhanced traceability and accountability – Laser-marked unique serial numbers enable full traceability, helping companies track shipments and resolve logistics issues efficiently.
Versatile application – Suitable for containers, trucks, trailers, tankers, and railway wagons, covering a wide range of cargo protection needs.

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