... ,nice structure,high heat transfer efficiency,low run cos DD DL DJ Series Air Cooler , EvaporatorThe outer appearance color is white. Has medium ... efficiency , even rime ,economical electricity , low run cost 2, the air-foil fan, the amount of wind is big, the firing ... craft, has the intense inoxidizability, the outward appearance elegant appearance. DD DL DJ Series Air Cooler , Evaporator