... good day. I am Jim, Trade Director of Cangzhou City Sined Steel Pipe Group Co.,Ltd China. Thanks your attention for ... Cangzhou City Sined Steel Pipe Group Co., ltd Profile Cangzhou City Sined Steel Pipe Group Co., ltd was established in 2003, located ... Thermal Power Generation. Meantime, we have attained ISO9001:2000 International Quality Management System certification, API 5L Certification, GB/T9711 ...