I. Analysis of raw materials As the raw materials of partition board are mainly special cement, industrial waste residue, eps、 calcium silicate board and so on, and the special cement and industrial waste residue are high temperature resistant materials that are not suitable for combustion, so the products have non-combustible properties in production. 

II. Original structure analysis   ：outside of the partition board is the use of calcium silicate panel this kind of non-combustible material as the wall board decoration, inside there are special cement, industrial waste residue, eps and other materials mixed according to the fixed proportion after frequency conversion steam press pressure, the formation of the inner sandwich board, the last two in one formed the current fire light fire wall board. Through the above analysis, it is not difficult to see that the fire resistance of light fire wall board is determined by the nature of its raw materials, and the structure of the product fire prevention. Finally, the fire resistance of this kind of plate is determined by experiments.