Screw Compressor, Plate Freezer, Tunnel Freezer manufacturer / supplier in China, offering High Quality Screw Compressor Refrigeration Unit for Cold Storage, High Anti-Corrosion Open Type Two-Stage Screw Ammonia Refrigerant Compressor for Cold Room, Factory Supply Refrigeration Equipment Screw Compressor Unit for Ammonia or Freon or CO2 and so on.