We had understood, in steely production technology, although still existing,a lot of oxygen cent press lower exercise case, but contain carbonFireproof materialCan all-pervading reason is its have the stress that the heat that absorbs high temperature to fall changes and arises, the cause that prevents the main character that the fireproof stuff place such as melt metal or slag soak asks. Powder of all sorts of the colophony of bond phenolic aldehyde that studied this kind of fireproof data, bitumen, metal and its high temperature combine reaction. Additional, to this kind of fireproof material, development goes preventing oxidation material is to want a condition. Etc static it is easy to press press and vacuum press equipment use when the brick that make carbon.