- Zhucheng Hongda Mould Co., Ltd.
- 全国主营:Steel castings, Rubber mould.
- Weifang Hongsheng Casting & Forging Machinery Co., Ltd.
- 全国主营:Machinery products.
- Weifang Coal Gas Outfit Factory
- 全国主营:Cylinder
- Zibo Longtian Spring Co., Ltd.
- 全国主营:Spring
- Zibo Mine Machine Works
- 全国主营:Steel castings, Machinery.
- Jinan Huayao Technology Co., Ltd.
- 全国主营:Spraying machine
- Yuhuan Donghai Automobile Fittings Factory
- 全国主营:Automobile standard parts, Automobile chassis fittings
- Shanghai Xianggu Steel Structure Engineering Co., Ltd.
- 全国主营:Steel structure engineering parts.
- Yongkang Tangxian Fire-fighting Equipment Factory
- 全国主营:Fire-fighting equipment
- Zhejiang Jinyida Door Co., Ltd.
- 全国主营:Burglarproof door
- Taizhou Haiyan Metal Products Co., Ltd.
- 全国主营:Steel wire pin
- Taizhou Luhuan Electric Appliance Co., Ltd.
- 全国主营:Environmental protection equipment
- Shanghai Jingrun Metal Product Co., Ltd.
- 全国主营:Casting.
- Taizhou Yuhuan Auto parts factories
- 全国主营:Screw Bolt
- Tiantai Tianyu Filter Screen Industry Company
- 全国主营:Industrial filter cloth
- Shaanxi Machinery I/e Corp.
- 全国主营:Electromechanical product
- China Machinery Industrial Products Co., Ltd.
- 全国主营:Machinery equipment, Parts and fittings, Casting and forging parts for mining industries
- Shanghai Lihu Hardware Spring Co., Ltd.
- 全国主营:Precision spring.