... surface area. Activated CarbonSymbolClassification and GB No.ApplicationLGranular AC from coal for desulfurization GB/T7701.-1997To be used ... , ethanol, ethers, gasoline, chloroform, carbon tetrachloride, etc.ZGranular AC from coal to be used as catalyst carrier or catalyst ... and filling of all types of industrial protective equipmentYGranular AC from coal for high efficiency adsorption GB/T7701.- ...