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High-Security Seals
Manufactured Since 1995

Trusted by global logistics, utilities, and customs agencies. All security seals are made in our own factory — China Haoshi Security Seals Factory — ensuring unmatched quality and consistency.

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Made In-House

100% manufactured in our Wenzhou factory since 1995

ISO 17712 Certified

Compliant with international high-security standards

Global Export

Trusted by clients in over 80 countries

About China Haoshi

We have been a professional manufacturer and vendor of security seals (container seals) since 1995. Our product range includes bolt seals, cable seals, pull-tight plastic seals, metal strip seals, twist seals, padlock seals, and meter seals.

All security seals are made in our own factory — China Haoshi Security Seals Factory — by ourselves. This vertical integration allows us to maintain strict quality control, ensure fast turnaround times, and offer competitive pricing.

Established

1995

Location

Wenzhou, Zhejiang, China

Certifications

ISO 17712, C-TPAT

Production

In-house manufacturing

Factory Interior

Our Products

High-performance security seals designed for container shipping, utilities, logistics, and customs compliance. All products are ISO 17712 and C-TPAT compliant.

Bolt Seals

Bolt Seals

Heavy-duty, tamper-evident seals for shipping containers and truck trailers. High tensile strength steel construction with anti-corrosion coating.

  • ISO 17712 HSS compliant
  • 10,000+ lbs breaking strength
  • Numbered for traceability
Cable Seals

Cable Seals

Flexible, high-security seals ideal for irregular openings. Made with galvanized steel cable and reinforced locking mechanism.

  • Cut and pull resistant
  • Lengths from 200mm to 1000mm
  • UV-stable housing
Plastic Seals

Plastic Seals

Lightweight, cost-effective pull-tight seals for general security applications. Ideal for bags, boxes, and light-duty containers.

  • One-way locking mechanism
  • 100+ lb tensile strength
  • Custom numbering and branding
Meter Seals

Meter Seals

Designed for utility meters (electric, water, gas). Prevent unauthorized access and tampering with secure locking design.

  • Weather and UV resistant
  • Transparent body for visual inspection
  • Sequential numbering
Padlock Seals

Padlock Seals

Re-usable security solution with padlock-style body. Ideal for gates, cabinets, and access points requiring repeated sealing.

  • Reusable up to 100 times
  • Hardened steel shackle
  • Keyed alike or keyed different options
Metal Strip Seals

Metal Strip Seals

Thin, flexible steel seals for sealing documents, bags, and small containers. Easy to apply with hand tool.

  • Tamper-evident breakage
  • Custom length available
  • Heat-stamped numbering
Twist Seals

Twist Seals

Simple, effective sealing solution using twisted wire. Commonly used in agriculture, waste management, and postal services.

  • Quick manual application
  • Galvanized steel wire
  • Color-coded options
Water Seals

Water Seals

Specialized seals designed for underwater or high-moisture environments. Corrosion-resistant materials ensure long-term performance.

  • Stainless steel components
  • IP68 rated sealing
  • Marine-grade durability
Download Product Catalogue

Why Choose SealSeals?

We combine decades of experience with cutting-edge manufacturing to deliver unmatched security and reliability.

Certified Quality

All products meet ISO 17712 and C-TPAT standards for high-security seals. Regular third-party audits ensure compliance.

In-House Production

Complete control over manufacturing process from raw materials to final packaging. No outsourcing means consistent quality.

Global Logistics

Efficient shipping to over 80 countries. Experience with FCL, LCL, air freight, and express delivery options.

Traceability

Every seal is individually numbered with optional barcode/QR code for full supply chain tracking and audit compliance.

Customization

Custom colors, numbering sequences, logos, and packaging. Meet your brand or regulatory requirements.

Expert Support

Dedicated sales and technical team with deep industry knowledge. Fast response times and solution-oriented service.

28+
Years in Business
80+
Countries Served
50M+
Seals Produced Annually
100%
In-House Manufacturing

Frequently Asked Questions

Are your security seals ISO 17712 certified?

Yes, all our high-security seals are manufactured to meet ISO 17712 standards for mechanical security seals. We are regularly audited to maintain compliance.

Where is your factory located?

Our manufacturing facility is located at No.28, Chuangqiang Road, Lucheng Light Industry Park, Shangshu, Wenzhou, Zhejiang, China, 325000.

Can I customize the seals with my company logo?

Absolutely. We offer custom printing, numbering, color options, and packaging to meet your branding and operational requirements.

What is your minimum order quantity (MOQ)?

MOQ varies by product type, but we are flexible and can accommodate both large container orders and smaller trial quantities.

How do you ensure product quality?

We conduct in-process and final inspections at our factory. Every batch is tested for tensile strength, tamper resistance, and compliance with specifications.

Contact SealSeals

Get in touch with our sales team for quotes, samples, and technical support.

Factory Address

No.28, Chuangqiang Road,
Lucheng Light Industry Park,
Shangshu, Wenzhou,
Zhejiang, China
P.C. 325000

Contact Information

Tel: 0086-577-8876 9586

Fax: 0086-577-8876 9585

sales@sealseals.com

sealseals@gmail.com

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