Hongtu manufactures 2–14 mm plastic chains in Ningbo, China, using virgin HDPE. In-house mould development, injection moulding and quality checks support bulk orders with custom colours, pack lengths and private label packaging.
Injection moulding equipment and machine controls.Inside Hongtu’s plastic chain production workshop.Injection moulding machines on the workshop floor.
22Injection moulding machines
50,000 mDaily production capacity
18 million mAnnual production capacity
80+Countries and regions served
95%+Customer satisfaction in our company survey
ISO 9001:2015Certified quality management system
CAPABILITY
Specialised from mould to pack.
Choose an existing chain model or bring us a new design. Our team coordinates tooling, production and packaging around the specifications agreed for your order.
01
Mould development
More than 20 years of mould development experience supports different chain sizes and link profiles. Send drawings, physical samples or product ideas for assessment. Our technicians also inspect and service existing tooling to help maintain consistent product formation.
We use virgin high-density polyethylene for injection moulding, with regular checks during production. Custom colours can be matched to a Pantone reference or physical sample, with sample confirmation before the production colour is agreed.
Every production batch undergoes tensile sample testing. Our packing team inspects the chain link by link and removes defective products. Chain lengths and packaging quantities can be customised, with brand labels and barcodes for private label ranges.
Our checks start with raw materials and continue through mould maintenance, production, batch testing and final packing.
01
Raw material selection
Virgin HDPE, without production regrind or externally sourced recycled material.
02
Mould maintenance
Regular tooling inspections and servicing address wear and help maintain consistent link formation.
03
Production inspections
Quality personnel check production regularly so issues can be identified and addressed promptly.
04
Batch tensile testing
Samples from every production batch are tested for strength. Results vary by chain model and version.
05
Packaging checks
Chain is inspected link by link during packing, followed by a check of packaging integrity.
Visit our factory in Ningbo.
We welcome factory visits and supplier audits by arrangement. Meet our team, review the manufacturing process and discuss the product specifications and packaging for your order.