- Dezhou Zhonglian Petroleum Machinery Co., Ltd.
- Address:xinhua industrial park Dezhou Shandong China
- Shanghai Dayu Valve Produce Co.,Ltd
- Address:Panjing road 1280 baoshan area shanghai city Shanghai Shanghai 201908 China
- Cangzhou Xiangyue Pipe-fitting Equipment Co.,Ltd
- Address:Xindian Hardware Street Cangzhou Hebei 061400 China
- Yantai Kiyofo Seamless Steel Pipe Co.
- Address:1 Jinyufeng Rd Beijing Beijing China
- Zhangqiu Yu Bin Petrochemical Fitting Factory
- Address:Rome 520,Block A ,Wealth Building,Mingshui,Zhangqiu city Jinan Shandong 250200 China
- Hebei Jimeng High-strength Flange-elbow Co.,Ltd
- Address:Jianshe Street Cangzhou Hebei 061400 China
- Jiaxing Burgmann Mechanical Seal Co., Ltd
- Address:No.88 King Kong Road Jiaxing Zhejiang 314100 China
- Qingdao Raising Trading Co.,Ltd
- Address:2217 NEW WORLD PLAZA,NO.9 FUZHOU ROAD,QINGDAO 266071 CHINA Qingdao Shandong 266071 China
- Nanjing Dosong International Ltd.,
- Address:RM201,Building171,YIYUNXIGU,NO8,HuiTong Road Nanjing Jiangsu China
- T.S.Q International Corporation
- Address:CBD Area ,Chao Yang District Beijing Beijing China
- Zhengzhpu Huitong Pipe Fittings Co.
- Address:No. 168, Guoji Road, Zhengzhou, Henan, China Zhengzhou Henan 450000 China
- Xushui Hengxin Flange Manufacturing Co., Ltd
- Address:North of Hengxiang Street Baoding Hebei 071000 China
- Jiangsu Hongsheng Stainless Steel Products Co.Ltd
- Address:NO. 4 ,Zhaojia Industry Park, Dainan Town, Xinghua City,Jiangsu Province, China Taizhou Jiangsu 215535 China
- Wh-steel Fittings Co., Ltd
- Address:yanshan Cangzhou Hebei 061300 China
- Jinmao Liquid Science and Technology Co.,Ltd
- Address:Suncun industrial part,Fanchang country,Wuhu city,China Wuhu Anhui 241000 China
- Cangzhou MingTai Pipeline Equipment Co., LTD .
- Address:Room 1902,Dongfang century building A Xinhua District ,Cangzhou city Heibei pro. China Cangzhou Hebei 061000 China
- Hebei Xinyue High Pressure Flange and Pipe Co.,Ltd
- Address:hope road Cangzhou Hebei China
- Hebei Huayu Flange Manufacturing Co., Ltd
- Address:West Jianshe Road, Baixiang County Xingtai Hebei 055450 China
- Dingxiang Feida Industrial&Forging Co.,Ltd
- Address:Chenjiaying,Dingxiang,Shanxi,China Xinzhou Shanxi 030001 China
- Hebei Longsheng Mineral&Metals Co.
- Address:Heping West Road Shijiazhuang Hebei China