- JiangYin XingDe Steel Pipes Co.,Ltd
- Address:Room 7409, No.2 , West of BinJiang street, JiangYin county, JiangSu China. Wuxi Jiangsu 214433 China
- Shengli Oilfield Highland Petroleum Equipment Co.,Ltd
- Address:No.232, Nan Yi Road,Dongying City,Shandong Province,P.R.China Dongying Shandong 257091 China
- Wan Steel Import and Export Co.,Ltd
- Address:2604, Suite A, Tianlong International Business Building, 69 Changcheng Rd., Tai'an, Shandong, China Tai'an Shandong 271000 China
- Hebei Yuanyukun International Trading Co.,Ltd
- Address:fengrun district Tangshan Hebei China
- Hebei Haodong International Trading Co.,Ltd
- Address:NO.5 E2 District Xintiandi Shoppong Mall,Tangshan City, Hebei Province,China Tangshan Hebei 063000 China
- Qinhuangdao Nower Marine Machinery Equipment Co.,Ltd
- Address:haigang district wenhua road 293 hao Qinghuangdao Hebei China
- Yanshan Qianyi Pipe Industrial Co.Ltd
- Address:New century city,Heiniucheng Road,Hexi District,Tianjin,China Tianjin Tianjin 300061 China
- China Simet Trading Company
- Address:18/F, Soluxe Fortune Building, Yard No.63 Xidawang Road, Chaoyang District, Beijing China Shijiazhuang Hebei 10002 China
- Hebei Zhonghai Steel Pipe Manufacture Company
- Address:longtan industrial area, yanshan county,Cangzhou city, hebei province,Chinaã Shijiazhuang Hebei China
- Liaocheng Zhongzheng Steel Pipe Manufacturing CO.,LTD
- Address:Mudanjiang Road, Liaocheng Economic developement-zone Liaocheng Shandong 252000 China
- BHT Technology Development Co., Ltd.
- Address:rongjiezhongjie Beijing Beijing China
- Tianjin SDTL Steel Pipe Co., Ltd.
- Address:6th floor, 4th building, Beichen building, Beichen District, Tianjin China Tianjin Tianjin 300400 China
- Tianjin Tianyingtai I&E Trade Co., Ltd.
- Address:West Of Dazhai Village, Yangchengzhuang Township, Jinghai County, Tianjin, China (Mainland) Tianjin Tianjin China
- Zhongzhou Special Steel Co.,Ltd
- Address:Room1513, New world building, No. 1018 Minan Road, Jiangdong District, Ningbo City, China Ningbo Zhejiang 315000 China
- Xuzhou Global Precision Steel Tube Co.,Ltd
- Address:No.10,Jingwei Road, Economic Develoment Zone, Tongshan,Xuzhou,China Xuzhou Jiangsu China
- Golden Shine Limited Co.
- Address:Futian District Shenzhen Guangdong China
- Shandong Liaocheng Zhongxing Steel Pipe Co.,Lot
- Address:dongchang rode Liaocheng Shandong China
- Tianjin Min Dexin Industrial and Trading Co., Ltd.
- Address:Daqiuzhuang Town , Jinghai County , Tianjin , China. Tianjin Tianjin 301608 China
- Qhd Aotong Trading
- Address:haigang district Qinghuangdao Hebei 066000 China
- Shanghai Hanqi
- Address:2020room,sunnyzone,Central north road,Tanggu,Tianjin,China Tianjin Tianjin 300450 China