... 3. Substitute of Bitzer and Copeland Beifeng semi-hermetic compressor is suitable for refrigerants,such as R134a,R404A,R407c,and ... Two stages compressorfor more information pls refer to www.beifeng.com.cnUsability:The same model compressors for use in many ... refrigerant, such as 134a.R404A.R407C.R22.The same model compressor is suitabke for different temperatures.Excellent functions: Motor highly ...