Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 03 Halogenated derivatives of hydrocarbons 29 03 74 Chlorodifluoroethanes (HCFC-142,142b) 29 03 74 00 Chlorodifluoroethanes (HCFC-142,142b) Commodity Code Description 29 03 74 00 000 Chlorodifluoroethanes (HCFC-142,142b)
