King-Drilling Tools Limited Company, established in April 2007 with a production base in Tianjin since October 2008, is a manufacturer specializing in trenchless drilling bits and tools. Recognized as a "Specialized, Refined, Unique, and New" and "High-tech" enterprise in Tianjin, the company operates a 12,200 square meter modern factory equipped with numerous CNC machines and dedicated production lines for tricone bits, mud motors, and reamer processing. With 17 years of experience, King-Drilling Tools focuses on the R&D, production, and manufacturing of crossing and trenchless drilling tools, which account for over 90% of its output. Their extensive product portfolio includes trenchless rock drilling tools, trenchless soil drilling tools, trenchless accessories, tricone bits for oil wells, mine shafts, and water wells, pile foundation roller bits, and rotary drilling rig tricone bits. They also offer self-designed mud motors made with new parts, reamers with solid round steel shafts, and tricone bits featuring palm back bearing protection for extended lifespan. The company holds ISO 9001 certification and serves major clients such as PetroChina and Sinopec, exporting products for foundation engineering drilling.