.....GL21R High-Speed Refrigerated Centrifuge applies various most state-of-the-art technologies. Its performance is approaching international standards. The instrument is equipped with imported machines in its refrigeration system, a frequency conversion electromotor in its drive system and an imported transducer. The whole instrument is controlled by a microcomputer and has a large LCD screen on it which can recognize Chinese characters. With the application of an auto identifying system, it can effectively prevent the rotors from overspeeding. GL21R is widely used in fields of biology, medicine, pharmacy, genetics, food sanitation, epidemic prevention, environmental science, colleges and etc.