- Shanghai Shi Shan Steel Structure Co., Ltd.
- Main business:
- Tianjin A Large High-Pressure Alloy Pipe Sales Ltd.
- Main business:
- Hebei Shengxiong Pipe Fittings Co., Ltd.
- Main business:
- Hangzhou Heavy Steel Pipe Co., Ltd.
- Main business:
- Tianjin Binhai Yashanway Import And Export Co., Ltd.
- Main business:
- Tianjin Doublewin International Trading Co., Ltd.
- Main business:
- Shanghai Hanqi Metallic Material Co., Ltd.
- Main business:
- Tianjin Xinlianxin Steel Pipe Co., Ltd.
- Main business:
- Tianjin TF Steel Pipe Co., Ltd.
- Main business:
- Foshan Xindongyuan Stainless Steel Co., Ltd.
- Main business:
- Tianjin Bach Steel Trade Co., Ltd.
- Main business:
- Shanghai Meaton Trade Co., Ltd.
- Main business:
- Leyon International Trading (Shanghai) Co., Ltd.
- Main business:
- Stark (Tianjin) International Trade Co., Ltd.
- Main business:
- Qinhuangdao Zhongyan Machinery Co., Ltd.
- Main business:
- PHILIPS METAL INDUSTRIES
- Main business:
- Tianjin Zehao Import & Export Co., Ltd.
- Main business:
- NARENDRA STEELS
- Main business:
- Tianjin Sinotop International Trading Co., Ltd.
- Main business:
