... -pressing, extraction, refining, oil materials including cotton seed, sunflower seed, rape seed, soybean, palm, peanuts rice bran and so ... . Production techniques of linseed oil,safflower seed oil,tomato-seed oil, grape-seed oil and castorseed oil3. Refining fractionation ... oil plants.8. Waste water treatment techniques in vegetable oil mills.. Vegetable oil/seed pretreatment, pressing/extraction and ...