GF board is an inorganic non-combustible board, mainly composed of hard silicate calcium stone, with stable physical and chemical properties.

The fireproof soundproof door uses high-temperature resistant calcium silicate core material, which is an inorganic board with very stable physical and chemical properties.

The product is an inorganic material, with the main crystal phase being hard calcium silicate, and its physical and chemical properties are stable. 

The product is an inorganic material, with the main crystal phase being hard calcium silicate, and its physical and chemical properties are stable.