color stone coated metal roof is based on al-zn(known as zincalume or galvalume steel)steel.the before and afterptotective film treatment,together with high precisionpressure-shaped gravel ensure the roof to be the best roofingmaterial. coated with an alloy composed of al 55%,zn 43.3%,si 1.6%,with non-toxic acrylic adhesive and natural stone, colorstone coated metal roof provides the advantages of long life,strength,duraility and beauty.
