The floor is made of calcium sulfate(a kind of organic material).Its core is made through dehydrated crystallization according to the features of calcium sulfate short fiber,and
wrapped with choice galvanized steel plate.Considering that calcium sulfate can resist the high temperature of 1450, the seamless connection is made between the upper and lower
galvanized steel plates when the floor is designed and made,which can block heat transmittance more effectively so as to increase the time of escape in case of fire.The intentional
exposure of 2-3mm core on the four corners of the floor according to the characteristics of calcium sulfate is aimed at self-regulating the dryness and humidity of indoor air.There are
angle keyholes on the four corners.