CHINA MOST POPULAR DISPOSABLE CONTAINER & CARGO VEHICLE SEALS ANTI-SPIN ROUND TYPE BOLT SEAL LOCK

Widely adopted in global logistics and transportation industries, these seals are commonly used for securing shipping containers, intermodal units, and a wide range of transport equipment. They are compatible with ISO containers, trailers, trucks, van trucks, tank trucks, railway wagons, as well as postal bags, courier shipments, airline luggage, and service carts.

In cargo transportation, especially for trucks, trailers, and railway freight cars, these seals provide continuous protection, ensuring cargo integrity throughout the journey. Their durable construction allows them to perform reliably under harsh environmental conditions, including temperature fluctuations, humidity, and mechanical stress.

Modern high-security seals may feature RFID chips or QR codes, enabling digital tracking, remote verification, and integration with advanced logistics systems. This improves operational efficiency and enhances supply chain visibility.

Typically manufactured from hardened steel or Q235 steel with an ABS coating, these seals deliver high tensile strength above 700 kg. The laser-engraved serial number ensures permanent identification, while the tamper-evident locking system provides clear visual indication of any unauthorized access.

Types – Bolt Seals:
Bolt seals are the industry standard for high-security sealing, especially in international logistics. Their solid metal construction and one-time-use locking system ensure maximum protection, making them ideal for valuable cargo, regulated shipments, and cross-border transport.

Low cost with durable metal parts & easy use service – Designed with cost efficiency in mind, this product combines strong metal components with long-lasting durability. It offers stable performance in daily logistics use while remaining easy to operate, helping reduce overall operational and replacement costs.

Disposable security lock with anti-counterfeiting and tamper-proof features – This is a single-use security locking device designed to prevent unauthorized access. It provides strong anti-counterfeiting protection and clear tamper-evident functionality, ensuring cargo safety throughout transportation.

Factory direct sales, customizable samples, strict quality control – Supplied directly from the manufacturer, we offer competitive pricing advantages. Custom sample support is available according to customer requirements, and every production batch is strictly controlled under quality inspection standards.

Rich export experience with multiple transportation options – With extensive international trade experience and complete export qualifications, we support flexible shipping solutions including sea freight, air freight, and land transportation to meet different delivery needs.

Multiple international certifications including ISO17712 – The product has passed several international certifications and fully complies with ISO17712 standards, ensuring reliable quality and global acceptance in security sealing applications.

Exceptional tamper resistance – Made from high-tensile steel and precision locking technology, the bolt seal provides strong resistance against forced opening, ensuring maximum cargo protection during transit.

Compliance with international standards – Fully compliant with ISO 17712:2013 and aligned with C-TPAT requirements, ensuring smooth customs clearance and meeting global logistics security regulations.

Cost-effective security solution – Despite its high-strength protection level, the bolt seal remains an economical choice. Its simple structure allows fast installation, reducing labor time and overall security costs.

Enhanced traceability and accountability – Each seal is marked with a unique laser-engraved serial number or barcode, enabling full shipment tracking, accountability, and clear evidence handling in case of disputes or loss.

Versatile application – Widely applicable across multiple logistics scenarios, including shipping containers, truck doors, trailers, and railway cargo systems, ensuring broad usability in global transport.

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