- Yantai Huoyanshan Boiler Co., Ltd.
- 全国主营:Industrial boiler, Pressure container.
- Shenzhen Jinli Steel Structure Engineering Co., Ltd.
- 全国主营:Steel structure house
- Rizhao Jialin Pipe Fittings Co., Ltd.
- 全国主营:Metal pipe fitting
- Qingdao Guangyuanfa Glass Co., Ltd.
- 全国主营:Glass product
- Qingdao Yueda Site Rigging Co., Ltd.
- 全国主营:Various riggings
- Yantai Dongfa General Fittings Industrial Co., Ltd.
- 全国主营:Fastener
- Jinan Xingbang Machinery Co., Ltd.
- 全国主营:Metal engineering structural unit, Non-standard equipment.
- Xinbao (dezhou) Industrial Co., Ltd.
- 全国主营:Pipeline fittings, Rubber product
- Laizhou Laisuo Produce Co., Ltd.
- 全国主营:Turnbuckle, Rigging fittings
- Rushan Dagushan Steel Casting Factory
- 全国主营:Cast steel parts
- Liaocheng Dong'e Yaozhai Machinery Plant
- 全国主营:Casting
- Shandong Chuande Chemical Co., Ltd.
- 全国主营:Bend, Flange, Pressure container.
- Laiwu Gangchengqu Plastic Steel Door And Window Factory
- 全国主营:Plastic-steel door and window
- Gaomi Hongxin Textile Machinery Co., Ltd.
- 全国主营:Casting
- Dalian Midland Trading Co., Ltd.
- 全国主营:Building accessories, Water pipe.
- Jining Standard Parts Factory
- 全国主营:Engineering machinery, Screw, Nut
- Shenzhen Chenggong Weiye Mechanical Equipment Co., Ltd.
- 全国主营:Electroplating equipment
- Rongcheng Beiyaxi Industrial Company
- 全国主营:Casting
- Wendeng Space Net Frame Engineering General Corporation
- 全国主营:Metal structure product
- Rizhao Wulian Wire-drawing Mill
- 全国主营:Hard-drawn wire, Coop