Refractory Bricks, Blocks, Tiles And Similar Refractory Ceramic Constructional Goods Containing, By Weight, Singly Or Together, > 50% Of The Elements Mg, Ca Or Cr, Expressed As Mgo, Cao Or Cr2o3
Refractory Bricks, Blocks, Tiles And Similar Refractory Ceramic Constructional Goods Containing, By Weight, Singly Or Together, > 50% Of The Elements Mg, Ca Or Cr, Expressed As Mgo, Cao Or Cr2o3