| Heilongjiang North Shuangjia Drilling Tools Co., Ltd. is a professional manufacture of oil drilling tools. Since the beginning of the development and manufacture of drilling tools in the 1970s., we have accumulated rich experience on R&D, manufacture and management. We have advanced equipments and strong technology. We have passed 1S09001-2015 quality management system certification and obtained the using right of API Monogram (API SPEC 7-1, API SPEC5DP, API SPEC 5CT) . Our products spread all over domestic onshore and offshore oilfield, and mainly exported to Middle-East ,South America, Europe and Africa. We are in top 50 enterprises of oil equipment industry, become one of oil downhole tools professional manufacturing and service enterprises with most varieties, most complete specifications and the most influential position in China |