... .simple design, high quality peanut Olive screw Oil expeller 1, What is Screw peanut oil expeller? Vegetable oils and animal fats are ... and can be syphoned off.The process is cal led transest erification, which substitutes alcohol for the glycerine in a chemical reaction ... small batch of wild oil plants as safflower, etc. It is with simple design, easy operation, high productivity, energy saving, low ...