... automatic preheating control and pressure controlof hydraulic system. 5. This machine, adopted imported high quality silicomanganese material for main components, Advantage ... be used for more than 20 kinds oil crops, such as sesame, peanut, soybean, black seed, sunflower seed, flax, vegetable ... the vacuum oil filtering is used to remove residue so as to ensure the pure oil quality and meet the standard ...