... refrigerated mobile refrigeration units have open-style, semi-closed cold storage room Refrigerant: R134a, R404a, R507a, R407c, R22Mobile cold storage temperature sub- ... cold -5 - 18 , the Treasury frozen -23 -35 .Mobile cold storage insulation Treasury sub-surface stainless steel plate, cotton sheet, color ... room, vegetble, meat or other things? or specify what storage temperature range you need?