- Shandong Mingzhu Petroleum Equipment Co,.Ltd
- Address:Kenli Economic Development Zone,Shandong Province Dongying Shandong China
- Ningbo Zhehua Heavy Stell Pipe
- Address:No.1 Tongyuan South Road,Machine Electricity Industrial Area. Ningbo Zhejiang 315202 China
- Jiangyin Dingrun Precision Steel Tube Co., Ltd
- Address:lixin village,qingyang town,jiangyin city Wuxi Jiangsu China
- Bazhou Hongsheng Industry Co.,Ltd.
- Address:WUPINGDONG ROAD,SHENGFANG,BAZHOU,HEBEI PROVINCE,CHINA. Langfang Hebei China
- Hebei Xinyuan Tai Tube Group Co., LTD
- Address:Economic and technological development zone golden street number 7 Cangzhou Hebei 061000 China
- Donggang City Dongfang High-New Metal Materials Co.,Ltd.
- Address:Bei jingzi Town,Donggang City,Liaoning Province,China Dandong Liaoning China
- Hangzhou Zhedong Steel Tube Product Co.
- Address:No.195, Gongkang Road,Gongshu District Hangzhou Zhejiang China
- Hebei Zhonghai Steel Pipe Manufactring Oc.,Ltd
- Address:Cangzhou longtan industrial development zone Cangzhou Hebei 061300 China
- Hebei JINHANG Imp.&Exp. Co.,Ltd
- Address:Room 1209,ZhongYuan Building,No.368,Youyi North Street, Shijiazhuang City,China Shijiazhuang Hebei China
- Jiangsu Mei Gang Steel Tube Co;Ltd
- Address:No.1 Xinggang Road, Yangzhou Jiangsu 225221 China
- Liaoyang Qutong
- Address:Shifu Road 1010 Shenyang Liaoning China
- Ruiguo Tngsheng
- Address:xinhuaroad Tangshan China
- HebeihongchengPipe Co.,Ltd
- Address:yanshan county wuliyao zone Cangzhou Hebei 061300 China
- Hebei Zhuowei Steeel Pipe Manufacturing Co.,Ltd.
- Address:200meter South of Qing County Toll Station,on west wing of No.104 Nation Highway, Cangzhou Hebei 062650 China
- SALT MOUNTAIN COUNTY CATHAY FITTINGS Co., LTD
- Address:æ²³åççå±±å¿çéçªå·¥ä¸åº Cangzhou Hebei 061300 China
- Hong Ye Metal Co.,Limited
- Address:No.P18,1/F,1st Area,No.11 of Kui Qi Yi Road, Chancheng District Foshan Guangdong 528401 China
- Shandong East Oil Petroleum Equipment Co., LTD
- Address:MIDDLE OF BEIQI ROAD LINZI DISTRICT ZIBO, SHANDONG P.R. of China Yantai Shandong China
- China HZZ Steel &Iron Group
- Address:Jingsan Road Zhengzhou city ,Henan province, China Zhengzhou Henan 450002 China
- Anshan Jinguan Iron & Steel Co.,Ltd
- Address:153# Qianshan Road Gaoxin District Anshan Liaoning China Anshan Liaoning 114051 China
- Tianjin Qunlida Steel Pipe Co., Ltd.
- Address:Da qiuzhuang Jinghai Tianjin Tianjin Tianjin 301606 China