HEILONGJIANG NORTH SHUANGJIA DRILLING TOOLS CO., LTD. is a state owned enterprise held by CHINA SOUTH INDUSTRY GROUP CORP. We started developing and manufacturing oil drilling tools since mid of 1970s. The company has accumulated rich experience in R&D, manufacturing and service of oil drilling tools. We are members of the CNPC, SINOPEC and CNOOC supply network.We owns more than 300 sets facilities that include CNC machine center, CNC lathe, CNC milling machine, various heat treatment and other related equipment. NSJ-DRILLING always insists on the operation concept of "Best Products, Best Services", and strictly controls the quality producing process dependant on military technology and quality inspection standards. We are certified to ISO9001-2008 Quality Management System Certification and obtained the user license of API Monogram, API Spec 7-1, API Spec 5CT, API Spec 5DP. These international quality management standards control all production processes to ensure high-quality products. After nearly 40 years of development, NSJ-DRILLING has more than ten series products including drill-stem tools, jars, inside blowout control tools, cementing tools, fishing tools, hole opening tools, milling tools, well head tools, top drive tools, stabilizers and etc. Meanwhile, we have a strong capability of co-production. Our products are utilized all over the world in domestic onshore and offshore oilfields, and mainly exported to the Middle-East, South Asia, Europe, Americas and Africa. We are one of the most influential manufacturing services of oil drilling tools in China.