Features: 1. Microcomputer control, touch panel, high torque frequency conversion AC motor drive, low noise, high speed precision, parameters can be changed arbitrarily during operation, no need to stop. 2. Large-screen LCD display, operating parameters can be automatically memorized, operating parameters can be set and automatically stored according to requirements. 3. RCF/speed rpm conversion, easy for operation. 4. 9 speed-up and 10 speed-reduction gears, three groups of damping shock absorption, instantaneous and continuous centrifugation available.   6. The special spring taper sleeve is used to connect the rotor and the main shaft. It is convenient and simple to install and unload the rotor, without direction, expand the contact area, safe and reliable. 7. The fluorine-free compressor unit (imported compressor) can pre-cool the rotor in a static state, using environment friendly refrigerants.