GSMDrilling(short for Shaanxi Golden Stone Machinery Manufacturing Co.,Ltd.) has been engaged in manufacturing deep hole drilling machine tool for 30 years. For years, GSMDrilling dedicated in designing, manufacturing and marketing of ‍deep hole drilling machines, machine accessories and gun drilling tools.Additionally, GSMDrilling provide sub-contract of deep hole drilling as well. As a professional deep hole drilling machine manufacturer of China, GSMDrilling benefits it clients by high quality products as well as high-class service.‍