- Xintai General Machinery Works
- 全国主营:Copper-aluminium cast, Concrete elevator, Conveyor
- Jinan Heavy Cast Steel Mill
- 全国主营:Cast
- Changyi Changsheng Casting Co., Ltd.
- 全国主营:Heating radiator, Sewage pipe, Iron casting
- Changyi No. 2 Hardware Factory
- 全国主营:Steel window
- Hongxingjietu Flim & Tv Equipment Co., Ltd.
- 全国主营:Film & TV equipment
- Changyi Huadong Spring Factory
- 全国主营:Spring
- Shenzhen Zhaofeng Integrated Product Factory
- 全国主营:Aluminium door and window, Iron art product.
- Jining Steel Window Factory
- 全国主营:Steel window
- Qingdao Qingke Railway Development Co., Ltd.
- 全国主营:Traffic facility
- Tianjin Jinnan Xinyida Metal Net Factory
- 全国主营:Metal net
- Gaomi Xiazhuang Town Hongli Tanhua Machine-made Factory
- 全国主营:Casting, Iron product
- Gaomi Xiazhuangzhen Tongxing Casting Co., Ltd.
- 全国主营:Casting
- Changyi Precision Spring Co., Ltd.
- 全国主营:Spring
- Jining Special Material Foundry
- 全国主营:Iron casting
- Shanghai Zhengdian Forge Plant
- 全国主营:Forgings, Steel forgings
- Ningbo Peiyuan Auto Fittings Manufacturing Co., Ltd.
- 全国主营:Shock absorber for auto and motorcycle, Hardware fittings, Non-standard high-strength screw and nut, Auto brake pads with rare-earth steel fiber, Friction material.
- Jiangyin Shengang Malleable Cast-iron Factory
- 全国主营:Forgings and castings
- Jiangyin Qingyang Xiaoqiao Hardware Spring Factory
- 全国主营:Springs