Excavator is one of the most widely used construction machinery. The working impact load of excavator oil cylinder is large, the control is complex and changeable, and the working environment is bad. The requirements for oil cylinder structure, buffer, coating and sealing are very high. Baiyi has the world's largest R & D and production base of excavator oil cylinder, and has carried out a lot of research work on sealing structure, buffer structure, mechanical structure and coating technology according to the special working conditions of excavator oil cylinder. Baiyi provides hundreds of thousands of high-quality full sets of excavator oil cylinders to the world's top construction machinery manufacturers every year. Whether small, medium, large or super large mining excavators, Baiyi can provide the best excavator oil cylinder.