1. hot air dryer for fruit and vegetable 2. one layer , three layer , 5 layer , 7 layer for choose from Hot air dryer for ... the help of the heat exchanger and blower, the hot air fill in the drying tunnel. The humidity removing Fan will ... foodstuff is dried by absorbing the heat of the hot air.Tunnel dryer Application:Fruit such as jujube, apple, papaya, mango ...