Zhejiang Kaiyu Drilling Bits Co., Ltd is a high technology enterprise , which specializes in the research and development of professional drilling bits. Our company established in 1975, with long experience in rock drilling process and latest development of rock drills .Our products have high strength , high wear resistence and long life ***** are widely used in metallurgy mine, geological exploration, water and electricity , traffic tunnel quarry and so on. Our company has passed ISO:9001:2000 Qualities Administer System Certification. As a responsible manufacturer , our quality guaranteed system can provide strict quality control over all products to make sure that customers will receive excellent products with favourable price. Our main products include: Chisel Horse Bit, Slanting Forging Flanged Bit, Triangle Teeth Bit, U-shaped Pillar Gear Dril Bit, Cross Bit, Trolley Bit, Pole Teeth Bit, Coal Electric Bit, Button Bit, Down-the-hole Drill Bit and so on. We export them to more than 30 countries all over the world. We are sure that our high quality products and excellent service will attract more and more customers’ appreciation.We warmly welcome all the friends to visit and cooperate with us for creating replendence together !