- Laiwu Fangyuan Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin City Tianbaoweiye Steel Pipes Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hankou Roll-Forming Steel Plant Of Wisco
- Main business:
- Caribbean RegionBermuda
- Guangzhou Juyi Steel Pipes Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Jiangsu Benqiu Pipe Products Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Laiwu Guanhua Rubber & Plastic Electrical Machinery Factory
- Main business:
- Caribbean RegionBermuda
- Liaocheng Xinhaifeng Steel Pipe Manufacturing Co., Ltd. (Development Zone)
- Main business:
- Caribbean RegionBermuda
- Tianjin Wenyunxing Steel Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Foshan Vinmay Stainless Steel Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Jinan Ouyaruite Machinery Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hangzhou Shintool Machinery Co., Limited
- Main business:
- Caribbean RegionBermuda
- Shandong Kingread Stainless Steel Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shenzhen Xinhuaxu Rubber Product Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Guangzhou Zero Degree Centigrade Auto Air Conditioning Inc.
- Main business:
- Caribbean RegionBermuda
- Zhejiang Jinxin Stainless Steel Manufacture Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Xuji Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Guoying Industry & Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- F-Moto Machinery Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Xinghua Suyuan Jingwei Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Anhui Quanchai Engine Co., Ltd. OBO Pipe Factory
- Main business:
- Caribbean RegionBermuda