- Keller-V Industry & Trade Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shijiazhuang Huize Pipe Fittings Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shanghai Kaifan Industrial Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Hebei Yihai Pipeline Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Suzhou Materials House Industrial Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Chongqing Dong Tang Trading Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Max Metal Material Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Cixi Three Circle Steel Pipe Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Yixing Dongchang Chemical Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Tianyuansteel-Pipes Production.Ltd
- Main business:
- Caribbean RegionBermuda
- Wuxi Susui Fluorine Plastic Products Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Qiangsong Sillicone Products Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Rizhao Zhengyuan Plastic Products Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Shanghai Hongxin Metal Material Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Shined International Trading CC
- Main business:
- Caribbean RegionBermuda
- Beijing HTZT (Industry) Group
- Main business:
- Caribbean RegionBermuda
- Foshan Junxingye Stainless Steel Products Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shandong Tongsheng Gangguan Youxiangongsi
- Main business:
- Caribbean RegionBermuda
- Nanjing Xinshuo Mechanical Equipment Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Chengdu Begin Pipeline Co., Ltd.
- Main business:
- Caribbean RegionBermuda