2. Superior fireproofing capability: Calcium sulfate panel has very good heat obstruction effect. When applying the 1200℃ flame temperature at one side, the other side needs to be passed heat in 2 hours. The coreboard strength is caused by crystallization during coreboard production. During hydration process from hemihydrate to dihydrate, the crystallization will create microporous channel all around so the flame heat generated gas can be emitted from the channel to avoid burst. Whereas, when flame near to cement board (Calcium Silicate board, Steel Panel), burst or heat conduction will happen.