... core is the board chairman of Wefsun,also with the joint efforts of all the staff, five branch firms namely ... ., Ltd, Qingdao Sanshan Metal Material Co., Ltd, Qingdao Kaimingyuan International Trading Co., Ltd, Qingdao Wofeiteng Steel Pipe Co., Ltd and Qingdao ... and distribution for one integrated company, which is the most resourceful company in Qingdao. Our company trades in many types of steel ...