- Beijing Hongshengyu Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shijiazhuang Tengfei Malleable Iron Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Yingkou Ouyang Steel Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Yingkou ZICN Pipe Manufacturing Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Hongrun Heavy Industrial Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Yuyao Megaflow Fitting & Valves Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Yunnan Senxingyuan Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Tianyuan Steel-Pipes Production Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Linyi Oriental Pipe Fittings Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Cixi City Youtian Pneumatic Component Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Cangzhou Furuida Pipeline Equipment Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Qinhuangdao Innovation Technology Development Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Zhejiang Liutong Plastic Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Beijing HTKD International Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shandong Yanggu Jingyanggang Precision Casting Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Anping Jinglong Metal Works Factory
- Main business:
- Caribbean RegionBermuda
- Hong Wei (Dongguan) Precise Metal Product Limited
- Main business:
- Caribbean RegionBermuda
- Shanxi Yuxin Casting & Forging Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shanghai Kaiquan Machinery Valve Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Sichuan Dien Pipe Fitting Manufacture Co., Ltd.
- Main business:
- Caribbean RegionBermuda