... Material Co., Ltd, Qingdao Sanshan Metal Material Co., Ltd, Qingdao Kaimingyuan International Trading Co., Ltd, Qingdao Wofeiteng Steel Pipe Co., Ltd and Qingdao Woming Steel Pipe Co.,Ltd, ... for steel buyers. We hope to do repeat business and provide partner specific services to justify an on ... time. The chairman of board Mr. Zhang Yunshan together with all of staff express their appreciation to the ...