Sheep wool felt is made from raw sheep wool. The product performance standards: GB FZ/T25001-92. Product’s NameWool feltUsageFelted wool is used in mechanism, aviation, shipping, train, auto, metallurgy, chemical, industry, textileindustry, seal, dustproof, cushion, quakeproof, heat preservation,heatproof,sound insulation, fire retardant,insulation.Filtration:air,petroleum,water.Polishing:marble, ...