What materials are галд тэсвэртэй тоосго аар хийгдсэн?

Refractory bricks are made of refractory clay and refractory raw materials through molding and calcining. Commonly used are clay refractory bricks, high alumina refractory bricks, silica bricks, mullite refractory bricks, magnesia refractory bricks, and alkaline refractory bricks.