Established in July, 1992, Shengli Oilfield Highland Petroleum Equipment Co., Ltd. (Highland Company)specializes in petroleum equipments. It possesses 3.05 billion RMB of total assets and owns more than 1, 980 thousand square meters of plant area. we have passed the quality system of ISO9001:2000, the environmental management system of ISO14001 and the career health, safety system of OHSAS18001 and obtained the rights to use API monograms of API5CT�??�?�£??API11AX�??�?�£??API 11B�??�?�£??API 11E�??�?�£??API5D�??�?�£??API4F�??�?�£??API8A and API7K for Casing, Tubing, Defueling Pump, Pumping unit, Drill Pipe, Drilling Rig Mast, Substructure, Drawworks, Crown Block, Traveling Block, Hook, Swivel, Rotary Table and Drilling pump.