... are as follows:1) Refractory brick. Fireclay brick, High alumina brick, Silica brick, Mullite brick, Magnesia brick, Corundum Various insulating bricks.2 ... factory about refractory product, which export refractory brick, refractory castable, refractory cement, and ceramic fiber ... factory about refractory product, which export refractory brick, refractory castable, refractory cement, and ceramic fiber ...