This article is only an overview section pretreatment production processes, detailed information, please enter the double spike machinery official website: www.ssyzjx.com compression method is the use of mechanical force to take the oil effect, squeeze the oil out of the oil in the oil extraction method . Is oil processing the entire production line is an important part. Suitable for cottonseed, rapeseed, castor, sunflower, peanut oil and other species of pre-press oil, large capacity, squeeze the cake and not broken loose, easy penetration of the solvent extraction, consumption, and low failure rate, is ideal for medium-sized oil refinery equipment. Take oil press method is the use of mechanical force action, will squeeze oil from oil to take the oil out of the method. Is oil processing the entire production line is an important part. Suitable for cottonseed, rapeseed, castor, sunflower, peanut oil and other species of pre-press oil, large capacity, squeeze the cake and not broken loose, easy penetration of the solvent extraction, consumption, and low failure rate, is ideal for medium-sized oil refinery equipment. Legal squeeze oil has pre-press and press are two, one, one press can only reach the dry cake residual oil rate of 12% -20% of the press has become the pre-pressing machine. 2, a press cake can reach dry residual rate of 4-7% of the press became press.