... % of oil dryer, 50% of coal burning boiler, 30% of electric boiler.Heat pump dehumidification drying method of the ... no-discoloration,no deterioration, and no oxidation, thorough drying, after drying and rehydration, less loss of nutrients, the long ... Our factory workshop & situation : 2012 tobacco drying machine Air to air,Air source heat pump dryer,drying machine heat pump dryer,Heat recovery ...