... 4)Dust proof 7.1)Character:wear-resistance,dustproof,sound-insulation,quakeproof,seal,heat-insulation2)Use:mainly used for a vriety ... industry, the purification industry and the environmental industry,the felt is a very good filter material,the result was satisfactory ... Make the metal products and machinety be wrapped in the felt,when transport and storage prevent scratched and stained oil,prevent ...