... L*W*H) Model,Size&Technical Data:How it works:Heatless Purge Desiccant Air Dryer is using micro holes in ... value and reliable program controller which can be auto timing and auto switching,works stable and reliable,unaffected from electric net, ... used in electrical,metallurgy,electron,mechanism,petroleum,chemical industry,auto industry,textile industry,chemical fiber stuff,air treatment, cigarette ...