... 1,automatic temperature control system 2,heat source: steam vegetable and fruit type drying machineApplication:It is suitable for apple,mango,asparagus ... , potato, garlic, corn, ginger,onion, banana,so many fruits and vegetable.working principle 1.the boiler supplys the dryer with steam ... be dried through abosrbing the heat of the hot air. vegetable and fruit type drying machine