... 3.screw diameter:80mm automatic cold press oil machine for soybean 1.our products can press all kinds of material including peanuts ... seeds,etc.Structure:five parts:Automatic control section , the heating press section , adjusting section , the transmission section,Vacuum oil filter.Features ... .2.Small footprint , high yield ,Good quality oil.3.Oil press can save labor and save cost,only 1 or 2people ...