- Liaocheng City Xinglong Seamless Pipe Manufacturing Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Dongxinli Pipeline Manufacture Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Ductiron Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Zhongke Huafei Industry Pipes (Qingyuan) Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Liaocheng City Tongli Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Ningbo Amico Pipeline Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Chuang Yi Plastic Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- Yuyao City Maikeer Plastic Moulds Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Zhongping Metal (Hongkong) Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Cangzhou Zhen-Yu Steel Pipe Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Guangzhou Yikai Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Jiangyin Sundream Precision Steel Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Qingdao Royal Steel Pipe & Fittings Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Tianjin Sanjuyuan Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Huzhou Huading Stainless Steel Pipes & Tubes Ltd
- Main business:
- Caribbean RegionBermuda
- Wuhan Fengzeyuan Economic & Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Orient (Sichuan) International Trade Company
- Main business:
- Caribbean RegionBermuda
- Cangzhou Synda Steel Pipe Group
- Main business:
- Caribbean RegionBermuda
- Kang Ye Steel Wire(Tianjin) Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Weifang Shiji Plastics & Rubbers Co., Ltd
- Main business:
- Caribbean RegionBermuda