Features of Noya Superfine Mineral Fiber: Clean, environmental friendly, has a good adoptability, No toxic, Asbestos free, no pollution. Chemical composition: SiO2 38%---45% Al2O3 15%------22% CaO+MGO 30%-----33% Fe2O3 1%------6% Others 3%------6% L. O. I. <1% Data sheet: Shot content >125um<=4% Average length 500± 50 Average diameter <5.5 Longtern using temperature 600-800degree C Melting point >1200 Hardness 6 Density 2.65g/cm3