Shanxi Golden Diamond Petroleum Drill Collar Tools Manufacturing Co., LTD Subordinates in Third geological engineering bureau of Shanxi geological prospecting institute.Is a whole people state-owned enterprise, professional manufacturer of oil drilling. locates in Taiyu Road,Jinzhong Finance Technology Development Zone, Shanxi Province, besides Taiyuan Airport. Traffic is very convenient.Our company has advanced equipment and auxiliary equipment. Above 85% employees have college degree or above, about 30% of them are mechanical manufacturing, mechanical design and oil drilling engineering...