Specifications: No smell Long life our new R&D..Can be washed several time Researching and developing of filter materials and filter products, our major products are: Ultra-sealed compound pockets for Superior Ventilation; Activated Carbon Filter materials, pre-filtering ceiling felt for spraying coating industry, PP filter paper, medium, and high efficient filter materials, paper, HEPA filter elements, Melt-blown non-woven fabrics, SMS compound fabrics. Our products are widely applied in the dust-free workshops, clean rooms, laboratories, ventilation equipments, purifying machines, medical and electrical industries. wet curtain pad