... low cost are much preferred to produce the crisp chips. Especially raw materials which can't be processed by ... gooseberry, Carambola (star fruit), Butter Fruit, Muskmelon etc.Vegetables: Onion, Carrot, Sweet potato, Potato, Pumpkin, Okra, Balsam pear, Taro, Lotus ... medicine, etc. Structure and work principle:It consists of vacuum fryer, vacuum system, oil-filing and heating system and electric control ...