Copeland compressors are divided into L, C, 3S, 4S, 6S series air-cooled compression and condensing units, which can be used as the main components of various refrigeration devices and applied to various freezing and cold storage equipment, according to different needs or use different The refrigerant can obtain various temperatures required for fresh-keeping of fruits and vegetables, quick freezing or cold storage of food. This unit can be widely used in various industries such as commerce, tourism, service industry, food industry, medicine and chemical industry.