Rockwool sandwich panel 1)anti-rust 2)fireproof,keep warm 3)environmental protection 4)high-strength,fast delivery ... color, good overall effect, it sets the bearing, thermal insulation, fireproof, waterproof in one, and no two decoration, is a widely ... ,especially white gray,sea bule,redlengthIt is up to youdensityEPS8-30/m3 rockwool 80-120kg/m3Material of top/back boardColor steel ...