This product chops the alkali-free glass fiber into a certain length, decomposes it into a very fine felt shape after carding, and enters the needle punching machine to continuously sew up and down with thousands of needles. E-glass felt has numerous tiny air pockets, fibers are irregularly arranged, and the thermal conductivity is low, making it an excellent thermal insulation material; It is a good talent to prevent noise interference; E-glass fiber has high temperature resistance, good mechanical properties, and high chemical stability, and is the best insulating material; High corrosion resistance.