... ,Chemically neutral,Low conductivity2.Physical and Chemical Properties: Physical PropertiesChemical CompositionsExteriorYellow white,light red,green,gray,brown ... Mixed with different benders to make templets of different sizes and functions.8. Be used as in large ... insulating layers in industrial smelting furnaces and walls and floors of architectures.Mobile: 86 13582186358 Raw perlite(white and gray)