Уурын зуухны галд тэсвэртэй тоосго хаанаас авах вэ?
Steam boiler refractory bricks we recommend high alumina refractory bricks, high alumina refractory bricks are one of the common refractory materials for kilns, often mixed with high alumina refractory castable, with high-temperature resistance, элэгдэлд тэсвэртэй, … Цааш унших
