Microcomputer control (touch screen) with digital display. Driven by AC frequency conversion motor with quiet and clean running. Imported refrigeration compressor. 9 kinds of ascending and descending rate of choice. 20 kinds of custom work mode section. Speed mutually establish/centrifugal force, Synchronous display. Two optional timing mode, Run start timing and timing starts to set speed, easy to switch. Full steel structure, Stainless steel centrifugal cavity.