Aluminum stone gold composite board (unne fire proof board) usually refiers to the board for fire protection of tunnel concrete structure. which is mainly formed by double-ided composite of ultra-high density cement fiber board ater chrome trealment, and then processed by fluorocarbon spraying technology and polyester roller coaling technology. fluorocarbon coating on the surface has exellent corrosion resistance and weather resistance, which can resist acid rain, salt fog and various air pollutants. Its excellnt cold and heat resistance can resist strong ultravlolet radlation, and maintaln color fastness, non-pulverizalion, long service life. With its overall thickness of 10mmA, non-combustible, high weather resistance. strong impact strength, and easy insallation and construction, it is bound to become the mainstream indusiry direction in the future.