Heilongjiang North Shuangjia Drilling Tools Co.,Ltd. is a professional manufacturer of oil drilling tools which is a subsidiary company of Heilongjiang North Tools Co.,Ltd.Since the beginning of the development and manufacture of drilling tools in 1970s, we have accumulated rich experience on R&D, manufacture and management.  After more than 40 years of development, our products spread all over domestic onshore and offshore oilfields, and exported to Middle East etc. dozens of countries.