本SAE标准适用于: 回收的R-134a制冷剂，用于维修设计用于R-12并已改装用于R-134a的机动车空调（A/C）系统； 回收的R-134a制冷剂，用于维修设计用于R-134a的机动车辆空调（A/C）系统； 回收的R-1234yf制冷剂，用于维修设计用于R-1234yf的机动车空调（A/C）系统。 本文件不包括密封的冷藏货物系统。

This SAE Standard applies to: recycled R-134a refrigerant, used in servicing of motor vehicle air conditioning (A/C) systems that were designed for use with R-12 and have been retrofitted for use with R-134a; recycled R-134a refrigerant, used in servicing of motor vehicle air conditioning (A/C) systems that were designed for use with R-134a; recycled R-1234yf refrigerant, used in servicing of motor vehicle air conditioning (A/C) systems that were designed for use with R-1234yf. Hermetically sealed, refrigerated cargo systems are not covered by this document.