Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 03 Halogenated derivatives of hydrocarbons 29 03 71 Chlorodifluoromethane (HCFC-22) 29 03 71 00 Chlorodifluoromethane (HCFC-22) Commodity Code Description 29 03 71 00 000 Chlorodifluoromethane
