... your sample. Product’s NameHigh Quality of Glass Polishing Wheels for Hats UsageFelted wool is used ... , shipping, train, auto, metallurgy, chemical, industry, textileindustry, seal, dustproof, cushion, quakeproof, heat preservation,heatproof,sound insulation, fire ... insulation.Filtration:air,petroleum,water.Polishing:marble,crystal,glass,jadeware,furniture,stainless steel plate.AdvantageThe wool felt ...