This equipment adopts hard tooth surface reducer with vacuum pump. With Feature of wear and tear, low noise and long lifetime. The screw use stainless steel welded together with anticorrosion and durable features. Inner roller adopts high quality seamless stainless steel pipe with pressive strength and non-deforming features while outer roller using cooling jacket. Control part adopts frequency conversion or electromagnetic variable-speed motor. It can be produced many types of toilet soap as well as transparent soap with different fatty acid content.