- Zouping Qingyang Liujia Xinsheng Smelting Factory
- 全国主营:Metal castings
- Wenling Chiguo Forgings And Steel Castings Factory
- 全国主营:Forgings, Steel castings
- Liaocheng Guanxian Hualong Traffic Electric Power Facilities Co., Ltd.
- 全国主营:Safeguard fence, Shielding fence
- Jinan Xinhan Electromechanical Equipment Co., Ltd.
- 全国主营:Welding and cutting tools, Welding machinery, Standard component
- Qingzhou Yongli Cast Steel Factory
- 全国主营:Steel castings
- Jinan Aoke Mining Engineering Technology Co., Ltd.
- 全国主营:Support and safety equipment
- Wuhu Xinli Electric Equipment Co., Ltd.
- 全国主营:Switch cabinet, Iron fittings
- Dong'e Hai'ou Steel Ball Co., Ltd.
- 全国主营:Steel ball
- Jinan Simate Machine Co., Ltd.
- 全国主营:Bike, Garage, Aluminium-plastic products
- Zibo Zichuan Huangzhen Machine Fittings Manufacturing Co., Ltd.
- 全国主营:Standard parts
- Bozhou Huanghuai Welfare Metal Door And Window Factory
- 全国主营:Aluminium alloy door, Sliding door, Aluminium alloy window
- Zhucheng Longsheng Cast Tube Co., Ltd.
- 全国主营:Valve & pipe fittings, Standard parts, Cast pipe, Mold, Rubber products
- Huantai Hongyuan Industrial Co., Ltd.
- 全国主营:Doors, Windows
- Yuanping Jinhong Steel Template Factory
- 全国主营:Steel template
- Linqing Wanxiang Steel Ball Co., Ltd.
- 全国主营:Steel ball, Bearing fittings
- Boshan Huada Mechanical Seal Parts Co., Ltd.
- 全国主营:Mechanical seals, Pump & parts, Standard component, Bearings, Water pump, Electric machine
- Ma'anshan Dangtu Benda Tinplate Co., Ltd.
- 全国主营:Tinplate parts
- Zibo Huantai Xindeli Forging Making And Repairing Factory
- 全国主营:Steel flanges
- Gaomi Weike Machine Foundry Co., Ltd.
- 全国主营:Plumbing and heating equipment
- Gaomi Kanjia Luda Foundry Co., Ltd.
- 全国主营:Casting