The microcomputer controls each function action, the operation is simple and convenient, and there is a five digit automatic counter inside. All pneumatic components are of well-known brands to ensure good quality of the machine. The front and rear oil scrapers are driven by cylinders and linear bearings to ensure smooth running. The screen lifting is driven by air cylinder and guide pillar. Oil free three-point combination does not produce exhaust oil mist pollution and is suitable for use in dust-free room. It can be customized according to customers' requirements to meet different requirements.