Parallel Screw refrigeration compressor unit adopts Bitzer screw compressor and leading designing idea, it is developed for large-scale low temperature refrigerator.Complete safe protection systemExcellent performance, better efficiencyLow noise, low shockStable operation, long life, low maintenance costPlc controlled, remote controlCompact structure, low floor area Reliable:It adopts Bitzer screw compressor and leading designing idea, and is equipped with complete safe protection system, thus it is duty-free machine. Energy-saving:Refrigerating capacity increase 35% at least, COP increase 20% at least; plc controlled system can save 20%-50% of power. Convenience:Easy to installation, compact structure, its area is 1/6 of ammonia refrigerating machine room.