... 20 kinds of oil crops can be pressed by this machine, such as, peanuts, sesame, vegetable seeds, soybean, sunflower, cottonseeds, flax ... . Oil Purity control: the vaccum oil filter is used to remove the residues in order to ensure the oil quality which ... . Vacuum filterOperatinal Process:1. Prepare raw materials.2. Adjust the machine, for example, checking electricity, beginning heating (if it is cold ...