- Hebei De Wei Pipe Co,. Ltd.
- Address:200 meters north of oil north depot Cangzhou, Hebei
- Tianjin Yuantai Runxiang Trading Co., Ltd.
- Address:Daqiuzhuang ,Jinghai , Tianjin China. Tianjin, Tianji
- Qingdao Branch of CMST Development Co.,Ltd.
- Address:No.97 Jiangshan north road Huangdao district Qingdao, Shandong
- yanshanjulong pipe and fittings manufacturing Co.
- Address:Wuliyao Develop zone,Yanshan county, Cangzhou city, Hebei Pro.,China Cangzhou, Hebei
- Cnbm Grou
- Address:haidian district Beijing, Beijing
- Shanghai Goodeal Steel International Company
- Address:Shanghai Shanghai, Shanghai
- Tianyi Seamless Steel Tube Manufacturing Co.,Ltd
- Address:Room407, No.1018, Xi Kang Road, Yuan Mao Building Shanghai, Shanghai
- Tianjin Yuantaiderun Pipe Making Co,.Lmt
- Address:Nankai Region Tianjin, Tianji
- Taian Shekent Co.,Ltd
- Address:Mountain tai district Tai&＃39;an, Shandong
- Hebei Tengtian Welded Pipe Equipment Manufacturing Co.,Ltd.
- Address:No.15,Shanqian Road,Economic Development Zone,Hebei,China Shijiazhuang, Hebei
- Foshan Bianjin Steel Co., Ltd
- Address:China (Mainland) Guangdong Foshan City No.3 of D2 area, Gangtie Da Dao, Gang Tie Da Shi jie Foshan, Guangdong
- Qinhuangdao Janus Metal Materials Co.,LTD
- Address:2-401 heyuan jianshe street Qinghuangdao, Hebei
- Qingdao Wefsun Grou
- Address:No.6 of Taiyuan Rd Qingdao, Shandong
- Anhui Fa Er Mechanical and Electrical Equipment Co., Ltd.
- Address:longwu road xuhui district shanghai Shanghai, Shanghai
- Gold Sea International Development Co,.Ltd
- Address:NO.9 Hengtai Road Daqiuzhuang Country Jinghai Town Tianjin City China . Tianjin, Tianji
- Uheng Steel Corp.
- Address:No.19, Tech Avenue, Development Zone, Cuijiazhuang Village, Daqiuzhuang Town, JInghai County Tianjin, Tianji
- Penglai Shuicheng Cast Basalt Pipe & Valve Co.，Ltd.
- Address:No.6 Zhenxing East Road, Liujiagou Town, Penglai City, Shandong China Penglai, Shandong
- Tangshan Tianyuda Trading Co., Ltd.
- Address:Room703,Rongtong Building,Lubei district Tangshan, Hebei
- Liaocheng Senxin Steel Products Co.,Ltd
- Address:No, 2 Xiangyang Road,Dongchangfu Area, Liaocheng City, Shandong, China Liaocheng, Shandong
- YDX Metal Co,Ltd
- Address:No.4-5 South of Fochen Road, Chencun Town Shunde district Foshan, Guangdong