wool felt natural wool character:non-toxicecology,environmental protection,wear-resisting, dustproof,heat-insulation grey wool feltdensityspecificationthicknesswool percent0.09-0.8g/cm31m*1m or in rolls0.5mm-100mm100%(1) Character:wear-resisting,dustproof,sound-insulated,quakeproof,seal, heat-insulation(2) Use:mainly used for a variety of mechanical equipment,mechanical and electrical products, ...