... contains three workshops: pretreatment&expansion workshop, oil extraction workshop oil refining workshop 1.Craft flow for ... finished oil. Raw materials of oil extraction machine : soybean, peanut, rapeseed, cottonseed, sunflower seeds, palm nuts, linseed, tea seed, corn ... embryo, rice bran, oil seeds. if have any question about cotton seed oil press line , contact us freely cotton seed oil ...