Household Hazelnuts Cold Press Olive Grain Seed Oil Pressing Machine Machinery adopts low-temperature spiral extrusion method for manufacturing oil. As a new oil making machine, cold screw press has improved the pretreatment process of traditional oil press that the oil materials steaming is no longer required in the pretreatment process. (After cleaning, the oil materials are directly squeezed in the cold press at a lower temperature.) By using the pure natural mechanical pressing technology which does not damage the oil nutrients, the cold press is suited to squeeze oil materials with a high content of oil, such as rapeseed, castor seed, and camellia seed. For camellia seed, 142% of the raw material oil is obtained by the use of cold press machine and then the residual oil in the oil cake can be extracted by re-squeezing or leaching method.