Yantai Baicai Machinery Co., Ltd. was established in 1995, specializing in Korean Doosan (Daewoo) excavator parts, professional management the original Korean Dongyang hydraulic breakers and spare parts for breakers (cylinder, piston, etc.) after 2000, we now have our own hydraulic breaker brand name for Pterosaur which is very popular for our customers,and our company specializing in wholesale and retail for various types of hydraulic breakers cylinders at the same time.