- Qingdao Hengchangtai Rubber Machinery Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Changzhou Tongxing Steel Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Huzhou Huaxiang Stainless Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Zhangjiagang Dingyin Pipe-Making Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Anji Pengda Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Dong Peng Bo Da (Tianjin) Industrial Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Yu Xing Steel Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shandong Donghong Group Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Zhangjiagang Free Trade Zone Youling Machinery Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Bazhou Shengfang Qianjin Tube-Making Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Cangzhou Rize Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shanghai Metals & Minerals Import Export Corporation
- Main business:
- Caribbean RegionBermuda
- Suzhou Baoxin Seamless Steel Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Wuxi Hongteng Plastic Machinery Factory
- Main business:
- Caribbean RegionBermuda
- Ruian Canyu Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Cangzhou Jiasheng Hydraulic And Pneumatic Equipment Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Liaocheng Yingfa Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Tianhong Juxin Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Foshan Jinlih Stainless Steel Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Zhejiang Kaida Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda