... system has oil pressing, oil extraction and oil refinery from various oil seeds such as cottonseed, rapeseed, high-oil ... 2. Shelling, debarking,delint,soften Second step of pretreatment, by using shucking machine to remove shell of oil seeds, because shell will reduce the ... press oil seedsFifth step of pretreatment, by using oil crops press machine press some of the edible oil from oil seeds. And ...