The R&D laboratory was established in Suzhou in April 2020, near Shanghai and Nanjing, with a professional team to provide customers with perfect wellhead solutions and customized services. 60% of the laboratories have obtained professional and technical personnel titles, including 2 senior engineers, and all personnel have bachelor's degree or above. The project of cylindrical hole with a certain depth can be divided into dun drill and rotary drill according to the rock crushing method and the type of tool used. Rotary drills are generally used in the petroleum industry.