Mixed Refrigerant Gas: 1.Used on air-conditioning industry,refrigerator industry,compressor etc. ... main products R22,R134A,R12,R404a,R407C,R410,R502,R406 etc, 4.The best after-sales service.5.OEMmixed refrigerant gas r507: Property ... , PPm≤1Vapor Residue, PPm≤100AppearanceColorless, No turbidOdorNo Strange StenchApplication:Retrofited refrigerant for R22 and R502. Refrigerant Gas R507