- Hebei Qinyi Steelpipe Sales Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin JiChengDaDuo Steel Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Foshan Shunde Shunwei Steel Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Zhonghai Steel Pipe Manufacturer Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Delta Metals International Co., Limited
- Main business:
- Caribbean RegionBermuda
- Shanghai Detrans International Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Weifang Xiandai Plastics & Rubbers Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- Jiangsu Lixin Steel Tube Group Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Yuanda Xinte Rubber&Plastic Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Huzhou Reborn Stainless Steel Pipe & Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Huzhou Fengtai Stainless Steel Pipes Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Zhongshan Mingshi Plastic Manufactrure Factory
- Main business:
- Caribbean RegionBermuda
- Tianjin Zongtong Steel Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Sino Tube Corp.
- Main business:
- Caribbean RegionBermuda
- Jiangsu ZBD Stainless Steel Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Dongguan Nizing Electric Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shandong Senrong Plastic Industry Technology Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shijiazhuang Jingbo Petroleum Machinery Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- China Futher Co., Limited
- Main business:
- Caribbean RegionBermuda
- Zhuji Wei Plastic Hoses Factory
- Main business:
- Caribbean RegionBermuda