- Huludao City Steel Pipe Industrial Co., Ltd
- Address:Beigang Industrial Zone , economic Development District Huludao Liaoning 125003 China
- Tianjin Bridgesteel Co.,Ltd
- Address:Baiyi Road, Daqiuzhuang Town, Jinghai County, Tianjin, China (Mainland) Tianjin Tianjin 301606 China
- Tianjin Xinyue Industrial and Trade Co.,Ltd.
- Address:Daqiuzhuang Industria Area, Jinghai Count, Tianjin, China. PC:301606 Tianjin Tianjin 301606 China
- TianJin RuiXinDa Industrial and Trading Co.,LTD
- Address:No.16,baiyi road, DAquzhuang Village,jinghai,tianjin city,China Tianjin Tianjin 310600 China
- Tianjin Diamond Tube & Pipe Industry Co.,Ltd
- Address:Room D, 4th Floor, CD unit, building E,(XinMao Technology industrial Zone) No.16 RongYuan Road, Tianjin Tianjin 300384 China
- Cangzhou Jiaxin Steel Pipe Co.,LTD
- Address:Yanta road,Yanglongtan industry area Cangzhou Hebei 061300 China