Raw and unexpanded Asbestos free Silze:0.3-1mm,10-20mesh,20-40mesh Origin:Tianjin,China ,Raw and unexpanded 2.Asbestos free 3.Silze:0.3-1mm,10-30mesh,30-60mesh 4.Origin:Tianjin,China 1.Silver Vermiculite features:Heat-resistant, corrosion-resistant, well-ventilation, water preservation, poisonless, odorless, low hardness, burning-avoidness, etc2.Silver vermiculite grades (size) Unexpanded silver ...