- Qingdao Dongfang Power Equipment Manufacturing Company
- 全国主营:Heavy-duty mining machinery, Cement machinery, Parts for petroleum chemical pipeline
- Qingdao Xinbaishi Steel Structure Co., Ltd.
- 全国主营:Steel structure
- Beijing Nanyang Lianggong Corrugated Pipe Co., Ltd.
- 全国主营:Flexible metal tube, Corrugated pipe compensator
- Beijing Lixunda Foundry Co., Ltd.
- 全国主营:Carbon steel casting, Stainless steel casting, Alloy steel castings
- Baoding Guangyang Wire-rod Manufacturing Co., Ltd.
- 全国主营:Galvanized steel wire, Steel twisted wire.
- Chongzhou General Machinery Factory
- 全国主营:Automobile maintenance and repair product
- Baoding Yutai Pipe Fitting Manufacturing Co., Ltd.
- 全国主营:Copper tube joint, Soldered-tin copper tubing fittings, Inner screw jilun, Seat core, Inner screw seat bend, Inner screw shut-off valve.
- Linqu Luxia Hongda Arts And Crafts Factory
- 全国主营:Electric door, Stainless steel product, Art wall sheet
- Chengdu Jinggong Furniture Factory
- 全国主营:Furniture, Board material
- Qingdao Xingye Steam Turbine Fittings Co., Ltd.
- 全国主营:Metal fittings
- Zibo Huanxin Household Electrical Appliance Fittings Co., Ltd.
- 全国主营:Plastic dipped net frame.
- Weihai Yinxing Prestress Wire Rod Co., Ltd.
- 全国主营:Steel wire, Stranded steel wire
- Wendeng Weigongting Foundry
- 全国主营:Iron castings
- Qingdao Jimo Fenghuang Rigging Factory
- 全国主营:Standard component, Rigging hardware
- Wendeng Xiaojun Precision Casting Co., Ltd.
- 全国主营:Steel casting, Iron castings
- Qixia Yongtai Electronic Equipment Co., Ltd.
- 全国主营:Electric control door
- Cangzhou Fire-fighting Equipment Factory
- 全国主营:Submerged fire-fighting water pump connector, Hydrant box, Room hydrant.