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1, according to Lanzhou lubricant product research and development, production and manufacturing field..Yes, by all means apply。For example: the new refrigerant R134a,R407C,R410A and other non-effective chlorine refrigerant, in the mineral oil is not compatible, must use polyether-polyol ester or methacrylate type freezing oil, such as: large and medium-sized refrigeration units, refrigerators, central air conditioning, car air conditioning refrigeration unit oil。