Heilongjiang North Shuangjia Drilling and Production Machine Co., Ltd. was established on December 30, 2001. Its business scope includes the development, research, production, and sales of oil drilling tools and accessories, down-the-hole drill bits and impactors, and other drilling and production tools. , And provide mechanical processing and heat treatment services, technical consulting, technical services, product leasing services, and engage in the import and export of goods and technology.