- Hebei tian yuan steel pipe manufacturing Co., LTD
- Main business:
- Caribbean RegionBermuda
- Luoyang Guorun Pipes company limited
- Main business:
- Caribbean RegionBermuda
- Siano (Beijing) Steel Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- Hebei Jushun Steel Pipe Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- SHIJIAZHUANG HUATE METAL PRODUCTS CO., LTD
- Main business:
- Caribbean RegionBermuda
- HEBEI NEW SINDA PIPES MANUFACTURE CO., LTD
- Main business:
- Caribbean RegionBermuda
- Zhejiang Dewei Stainless Steel Pipe Industry Co,Ltd
- Main business:
- Caribbean RegionBermuda
- Quanzhou Yexin Steel Products Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- Shanxi Guanghua Cast Pipe Co., Ltd
- Main business:
- Caribbean RegionBermuda
- Hebei Zhong Tai Steel Pipe Manufacture Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Shandong star source tower Co.,LTD
- Main business:
- Caribbean RegionBermuda
- shandong huawei metal commodoty co.,ltd
- Main business:
- Caribbean RegionBermuda
- cangzhou xinyuan pipe produce co.,ltd.
- Main business:
- Caribbean RegionBermuda
- Beijing zhongtaixingshun Pipeline Equipment Co.,Ltd.
- Main business:
- Caribbean RegionBermuda
- GUANGDONG YITONG PIPE INDUSTRIAL CO.,LTD
- Main business:
- Caribbean RegionBermuda
- Shijiazhuang XingHao pipefitting CO.,LTD
- Main business:
- Caribbean RegionBermuda
- HangZhou Mevaja Import&EXport Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Hebei Dexin steel pipe Limited company
- Main business:
- Caribbean RegionBermuda
- Qingdao Risingsun International Trade Co.,Ltd
- Main business:
- Caribbean RegionBermuda
- Great Wall Industrial (HK) Co., Ltd.
- Main business:
- Caribbean RegionBermuda