... MATERIALS OF NEW PRODUCTS Metal or magnesium super insulation roof tileHIGH PERFORMANCE1.High quality,elefant and uniform2. ... ,hygienic,non-radioactive4.Fireproof,non-combustible5.Better heat insulation than other tiles6.Insulating,non-conductive7.Acid-resistant, ... .Ceramic,glass and light factory buildings3.Hardware,machinery,electic app;iance factory buildings4.Chemical,electroplating and plastic ...