Maxtop MTSH-5 and MTSH-8 synthetic refrigeration compressor oil is a kind of low viscosity, energy saving and environmental protection refrigeration compressor oil. It is a special synthetic oil as the base oil, and add lubrication additives, stabilizers, preservatives and other additives prepared. MTSH-5 and MTSH-8 synthetic refrigeration compressor oil has excellent missolubility with R600A or R290 refrigerant, excellent lubricity and thermochemical stability, has a very low freezing point and excellent low temperature fluidity, has a high electrical insulation and good compatibility with various materials. It is especially suitable for use as synthetic refrigerated compressor oil in refrigerators, freezers and freezers with R600A and R290 as refrigerants.