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See Chinese contents: GB/T 37123-2018 GB/T 37123-2018: Electrically driven motor vehicle air-conditioning unit
This Standard specifies the terms and definitions, types and basic parameters, technical requirements, test methods, inspection rules, marking, packaging, transport, and storage of electrically driven motor vehicle air-conditioning unit. This Standard applies to the electrically driven motor vehicle air-conditioning unit, which uses R134a, R407C, R410A, R744, R1234yf as refrigerants. Other special-purpose air-conditioning units or air-conditioning units using other substances as refrigerants can refer to it for implementation.
