ZHEJIANG QINGFENG REFRIGERATION EQUIPMENT MANUFACTURING CO., LTD is a professional manufacturer of industrial chiller, freezing dryer, ground source heat pump units, water source heat pump boiler, grain storage cooler, mushroom cultivation machine and air conditioning equipment in China. We are constantly introducing advanced manufacturing workmanship and testing equipment, and invest 5% of our gross sales volume into the R&D center every year. We have established a national testing center and own many independent research and development patented technologies, such as anti-corrosion flooded screw chiller, economizer, U-type anti-corrosion evaporator, external thread titanium alloy evaporation tube and etc, which make Qingfeng become China industrial pilot in cooling and heating equipment industry. Welcome to cooperate with us.