1 By using the forced ventilationfuntion, there are adjustable air distribution inside the oven. The materials can be dried uniformly. 2 Heating source: electricity,coal, blast stove. 3 Temperature allowed with this fruit vegetable dryer heat 50 C-140 C,the maximum is 150 C. Electricity heat 50-350 C. 4 Concerning power: Automatic control system and computer control system for your choice. 5 If you have special request, we also could customize the pork drying machine for you