... more than 20 kinds of oil crops, such as, olive, palm, oil sunflower, cottonseeds, soybean, peanut, sesame, vegetable seeds, ... health of quarantine. (5).Three stage pressing for one time is realized by this series machine. (6). Small Area Covering: 10 ... , soybean, etc. Before prepressing, you have to pretreat oilseed by cleaning, screening separation, washing, hulling, softening, flaking, cooking etc ...