This document stipulates the basic requirements, technical requirements, test methods, inspection rules, marking, packaging, transportation and storage, safety, and quality commitments of the mixed refrigerant R507A. This document applies to 1,1,1-trifluoroethane (hereinafter referred to as R143a) and pentafluoroethane (hereinafter referred to as R125) as raw materials, mixed according to the specified mass ratio (R143a/R125:50.0/50.0) The prepared mixed refrigerant R507A.