- Yuhuan Zhengsheng Valve Factory
- Main business:
- Caribbean RegionBermuda
- Jiangsu Rongma Imp & Exp Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Taizhou Tengda Valve Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Yuyao Zhongyu Metal Products Factory
- Main business:
- Caribbean RegionBermuda
- Shandong Huaxing EP Group Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Tianyingtai Imports and Exports Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Wenzhou Longwan Zhengqiu Valve Factory
- Main business:
- Caribbean RegionBermuda
- Yantai Landy Import & Export Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tian Jin Aokai Oil Tools Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Huajia Holdings Group Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Fujian Kaihong Valves Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hangzhou Alltop Irrigation Equipment Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Taizhou Yusheng Copper & Plastic Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Jiangsu Huayan Marine Equipment Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Laizhou Yuankun Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Yuhuan Frank Valve Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hangzhou Kangyuan Plastic Pipes Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Yongjia Hongqiu Valve Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Huacheng Rise Steel Pipe & Tube Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Rainia Import & Export Co., Ltd.
- Main business:
- Caribbean RegionBermuda