Microprocessor-based controlled with user-friendly operational panel and bright LED display. Seperation protocols can be automatic stored. AC frequency motor drived with superspeed shaft for smooth running and free maintanence. Steel body, stainless steel chamber and imported key components for easy cleaning and durability. Multistage damping system for small vibration and low noise. Lid interlocking device greatly increases the operational safety. Air conduction system reduces much heat to protect the control board and avoid the aging of circuits. Designed with various protection devices and fault diagnosis system for maximum operational safety, such as lid lock system, over-speed detection and so on. Unique air guide design for small temperature rise during seperation to effectively protect samples.