... Thickness: 10-50mm customized production is available LUYANG Thermal insulation board is a lightweight refractory material processed with alumina-silica ... ,etc.Combustion chamber liners,boilers and heaters.Back-up insulation for brick,and monolithic refractories.Transfer of molten aluminium ... also available. For more information,please contact us ! Thermal Insulation Board ( high quality and low price)