The fire door core board is the core part of the fire door. With the fire door core board, the fire door has the function of fire prevention. The perlite fire door core board adopts expanded perlite as the main raw material, and is a hollow honeycomb-shaped particle spherical body that is instantly expanded at a high temperature above 1300 ° C. Therefore, the fire door core board made is a natural green and environmentally friendly Ideal product.

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