Cotton Buff Cotton Wheel is made by cotton with different density as 21, 20, 30, and 40. It is mainly used for surface polishing of nonmetal products and other metals like stainless steel, Cu, Al etc. Rison Cotton Wheel is made by cotton wheel after special chemical treatment, which is used for metal surface treatment including stainless steel and others. Meanwhile, in order to reduce surface temperature, Soga still makes other pleat wheels（Free Pleat Flannelette Wheel, "人" Pleat Flannelette Wheel, Cyma Pleat Flannelette Wheel etc., which are mainly used for wind cooling effect of differnt polished articles. Sisal Buff Sisal Wheel uses mechanical flax with high intensity and long fibre as major materials and adopts thickening or semi- thickening sewing as technique. Sisal wheel is used for the surface treatment of stainless steel and other metals. As for Rison Sisal Wheel, based on sisal wheel, it carries other chemical enforced treatment on the wheel so as to make it harder. Therefore, its weariness resistance function is enforced, using life is extended and working efficiency is impro- ved. It is mainly used for polishing work for metal rough surface and R angle.