NanoBoard Cover Aluminum Foil Fiberglass Cloth Microporous insulation board (NanoBoard) is made of high purity Silica, SiC particle powder and others special material together with binder. Based special microporous technology, this insulating product has best thermal conductivity, which is lower than that of stationary air under atmospheric pressure. Its insulating performance is 3-10 times better than the traditional fiber insulation. NanoBoard is widely used Insulating layer of ceramic fiber, insulating layer of refractory castable, insulating layer of insulating firebrick and refractory brick. To instead of traditional insulation material.