... efficiency.4.bright type copper tube thickness:0.35mm,silverbrazing for elbow.5.motor:efficient,low power-consuming ... time.6.2.6MPa pneumatic test permition,reasonable design, Power conservation by 25%.7.cold-rolled steel plate for ... for shell,phosphating static spraying technique,pleasing shape,rustproof.8.Defrost heat performance: 8 hours defrost cycle. Roof installation dual discharge air cooler for ...