Keweijiani (Beijing) Technology Co., Ltd. is a research and development, production and sales of high-tech enterprises, mainly engaged in cryogenic processing equipment, cryogenic assembly equipment, frozen equipment research, development, manufacturing and sales. The series uses the latest heating technology, control techniques and liquid nitrogen dispersion technology, programmable heating, thermostats, cooling processes at uniform and stable. Liquid nitrogen as a refrigerant to meet the cooling and environmental requirements. Products are horizontal, vertical, square, cylindrical, and other specifications, and user requirements to design and manufacture, can be used in mechanical engineering, genetic engineering, pharmaceuticals, food processing, medical research, preservation of plants, aerospace and husbandry field, the series has been widely used in many industries at home and abroad.