- Hebei Xinrui Oil Pipeline Equipment Co., Ltd.
- Address:West Industry Park 1
- Shandong Huitong Seamless Pipe Manufacturing Co., Ltd
- Address:east of mudanjiang road
- Shijiazhuang Asia Casting Co.ltd
- Address:1210, No. 77, Guang'an Street, Chang'an District
- Cangzhou Yueyang Tube Industry Co., Ltd
- Address:tangu street and donggang road
- Xin Yuan Tai Steel Tube Group
- Address:15/F, No.2 Building, Fortune Center Jinhai, No.21, Guangqu Road, Chaoyang District, Beijing, China.
- Ningbo Sanding Steel Pipe Engineering Co., Ltd
- Address:No.8,2nd Fengyang Rd,Beilun,Ningbo,China
- CANG ZHOU LONG SHENG PIPELINE EQUIPENT CO., LTD
- Address:LONGTAN INDUSTRIAL ZONE,YANSHAN COUNTY,CANGZHOU CITY OF HEBEI PROVINCE
- Shanxi Guanghua Cast Pipe (Group) Co., Ltd
- Address:Dongzhuang Casting Industrial Park
- Hebei Yiboxiang Steel Pipe Group
- Address:Industrial Development Zone Yanshan Hebei China
- wall Stainless Steel Press Fitting
- Address:JuGuanTun Industrial Park
- United Steel Pipe Co Ltd
- Address:jinghai town
- SHENGHAO PIPE FITTINGS MANUFACTURING CO., LTD.
- Address:Industrial Zone Mengcun Cangzhou Hebei China
- SHANDONGWENYUAN PLASTICCO., LTD
- Address:: Sibaoshan Shangzhuang Industrial Park,Zibo High-Tech Development Zone,Shandong,Province, China.
- Taiyuan Fuou Trading Co., Ltd
- Address:Qinxian Garden, Tiyu Road, Xiaodian District, Taiyuan City, Shanxi, China
- Hebei Tianlong Pipe
- Address:Jiefang road Cangzhou city China
- Wu`an City Yongtia Foundry Industry Co., Ltd
- Address:South of Xinlidian Village,Wu`an City, Handan,Hebei-056300 China
- HONG KONG SOUTHER INTERNATIONAL (GROUP) CO., LTD
- Address:926-928 Dongming building, No.284, Minkang Road, Minzhi Street, Longhua Area, Baoan District
- Shanghai Shihang Copper Nickel Tube Fitting Co., Ltd.
- Address:528 Donggang Road, Pudong New District, Shanghai, China, Shanghai - 201300, Shanghai, China
- Ginde Plastic Pipe Industry Co.LtD
- Address:No.237-68 North Huanghe Street Yuhong District Shenyang City
- Cixi Jinlong Copper & Aluminium Tube Manufacturing Copany
- Address:No. 31 Industrial Road, Industrial Development District of Zhangqi Town, Cixi City