An air separation unit (ASU) separates atmospheric air into its primary components, typically nitrogen and oxygen, and sometimes also argon and other rare inert gases. Cryogenic air separation units (ASUs) are built to provide nitrogen or oxygen and often co-produce argon.

CenturyVal is one of the most experienced manufacturers of air separation units in China. CenturyVal provides cryogenic valves for air separation, air compression, molecular sieve adsorption, and air distillation (cold box). We also provide corresponding transportation and technical services.