This standard specifies the terms and definitions, types and basic parameters, requirements, test methods, inspection rules, marking, packaging, and transportation of microchannel heat exchangers (hereinafter referred to as "microchannel condensers") for air-cooled condensers in refrigeration and air-conditioning equipment. and storage. This standard applies to microchannel condensers using R22, R410A, R407C, R404A, R134a, R32 and R290 as refrigerants. This standard does not apply to microchannel condensers using CO as the refrigerant; microchannel condensers using other refrigerants can be implemented by reference.