防火门专用豪仕莱特芯板（珍珠岩）主要适用于木质防火门、钢质防火门的防火填充材料；
Housrey special type fire door core board (perlite) Mainly applied to wooden fire door, steel fire door in the fire fill material;
防火门专用豪仕莱特芯板（珍珠岩）主要适用于木质防火门、钢质防火门的防火填充材料；
Housrey special type fire door core board (perlite) Mainly applied to wooden fire door, steel fire door in the fire fill material;
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