- Hebei Dingli Pipeline Industry Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Hebei Jianzhi Casting Group Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Kairui Pipe & Fittings Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Chongqing Yuhui Keyu Machine Electricity Equipment Corp.Ltd.
- Main business:
- Caribbean RegionBermuda
- Dongying Zhengda Metal Produxt Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- SIANO(BEIJING)STEEL CO.,LTD
- Main business:
- Caribbean RegionBermuda
- Hebei Minhai Pipe Fittings.Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- zhejiang aoxing pipe fittings co.,ltd
- Main business:
- Caribbean RegionBermuda
- Yanshan HongBo Pipeline Engineering Co., Ltd
- Main business:
- Caribbean RegionBermuda
- BaoDing Chuan Cheng Machinery Parts Trading Co.Ltd.
- Main business:
- Caribbean RegionBermuda
- Dongtai Yincheng Stainless steel Manufacture Co.,L
- Main business:
- Caribbean RegionBermuda
- YingKou Laobian Dongcheng Pipe Factory
- Main business:
- Caribbean RegionBermuda
- Wenzhou Boerden Pipe Fittings Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- Cangzhou Haoguan Pipe Fittings Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Primetech
- Main business:
- Caribbean RegionBermuda
- Shijiazhuang Linsen Malleable Iron Co., Ltd
- Main business:
- Caribbean RegionBermuda
- MIGO INTERNATIONAL LTD
- Main business:
- Caribbean RegionBermuda
- Cangzhou Hengli Pipe Fitting Manufactruing Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- Dalian Wells Metal Products Co.,LTd
- Main business:
- Caribbean RegionBermuda
- Cangzhou Yongwang Pipeline Manufacturing Co.,ltd
- Main business:
- Caribbean RegionBermuda