Features: * Compressor, energy saving and high efficiency, low noise, long life. * Vacuum pump, small volume, pumping speed, low noise, can achieve higher vacuum. * Integrated design, compact structure, easy to use. * Environmentally friendly refrigerant, ODP=0. * With defrosting function, safe and reliable. * The cold trap and operating table are made of stainless steel, corrosion resistant and easy to clean.