- Hangzhou Donghua Chain General Factory
 - Specialises in the manufacture and sale of roller, conveyor, motorcycle, silent, leaf, timing, and special usage chains. - JingJiang Anchor Chain Factory
- Manufacturers of anchor chains and accessories.
- Ningbo Synchronous Belt General Factory
- Produces rubber driving belts.
- Rudong Chain Works
- Manufactures iron link chains, steel chains, and attachments.
- TBM Zhejiang Shuangniao Machinery Co., Ltd.
- Specialises in design and manufacturing of electric and manual chain hoist, lever hoist, and various high tensile sling assembly. Based in Zhejiang, China.
- Tongxiang Double Arrow Group Co. Ltd.
- Producer of conveyor belts, flat rubber belts (transmission), and rubber tubes.
- Zhengmao Group Anchor Chain Sales Co. Ltd.
- Manufacturer and exporter of marine anchor chains, mooring buoy chains, diesel engines, and accessories.
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