... bitzer series screw compressor from 150HP to 540HP , 2 TO 6 numbers of compressor to be parallel unit2. Refrigerant : R404A, R22 ... time equipment investment2) safe power,supply cooling capacity according to need, save 20% power compared with single unit ... )Perfect protecting function, meanwhile with alarm fuction , more easy to maintance .Applications:Agricultural , food, restaurant , chemical industry, ...