Feature:Light weight,10-14kg/m2 ,convenient installation,short construction period low building cost,hight bearing capability,strong integrative stiffness and excellent strength.Flexible usage,the length can be determined by requirement of project design as well as installation and transportation condition.It is of good heat and sound proofing as well as moisture-proofing.the average coefficent of heat conductivity is 0.032kcal/m.h.℃