Relying on the strong technical force of scientific research institutes of China University of Geosciences and international advanced analysis and testing equipment, Liteao has designed and manufactured engineering drills of various specifications for coalfield, geology, and rock soil by applying functional polycrystalline diamond composite and cemented carbide. Diamond composite bits and high-performance alloy picks are adopted to meet the functional requirements of the cutter of drilling and under different working and geological conditions, which significantly improve the formation adaptability and cost performance ratio of the bit, also take the drilling efficiency and product service life into account, achieving the purpose of cost reduction and efficiency increase.