Grammes per square metre: 30g/㎡～500g/㎡
Needle-punched cotton is also named as plyester needle-punched felt with features of high porosity degree, good air permeability, high dust-collect efficiency, excellent resistance to tensile stress and long working life etc. The highest resistant temperature is up to 150 degree Celsius. Medium acid retardance, medium alkalinity and excellent Abrasion resisting property. Widely used in making of prefilter, medium efficiency filer and pocket filter.