- Zhong Huan Flange Co., Ltd. Jiangyin City
- Main business:
- Caribbean RegionBermuda
- Hebei JINYAODE Pipeline Co. Ltd
- Main business:
- Caribbean RegionBermuda
- Jinhua Huatai Copper Industry Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Haiqi Steel International Co., LTD
- Main business:
- Caribbean RegionBermuda
- Zhangjiagang Bonded Aea Henglong Steel Pipe Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Fujian Minfa Mould Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Cangzhou City Sined Steel Pipe Group Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Taizhou Huangyan Juneng Machine Mould Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Tianjin Qiushi Industry and Trade Co., Ltd
- Main business:
- Caribbean RegionBermuda
- TIANJIN DINGCHENGLI INTERNATIONAL TRADING CO.,LTD
- Main business:
- Caribbean RegionBermuda
- Tianjin Da Yu Plastic Products Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- SHANDONG HUABAO STEEL PIPE CO.,LTD
- Main business:
- Caribbean RegionBermuda
- Tianjin Baolf Steel Co.,Limited
- Main business:
- Caribbean RegionBermuda
- Taizhou Huangyan Shine Mould Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Beihai Pipe
- Main business:
- Caribbean RegionBermuda
- Hebei Enterprise Ltd,. Co
- Main business:
- Caribbean RegionBermuda
- Hangzhou Yifang Steel Structure Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Xiamen Yijia Trade And Industry Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Shaoxing Nathan Electric Co., Ltd.
- Main business:
- Caribbean RegionBermuda
- Rubatek LLC
- Main business:
- Caribbean RegionBermuda