... , rapeseed -220v-380v, 1.5-4KW - One person needed Oil press/ oil expeller Features:1.small land-using: only need 10-20 ... the chamber, there is quite strong friction among press screw, chamber and the oil materials. 3. On the other hand, ... property, damage colloid, increase plasticity, decrease oil’s elasticity, resulting in high oil.Oil press main technical parameters:BV certificate of our products ...