Section 06 Products of the chemical or allied industries 29 Organic chemicals 29 12 Aldehydes; cyclic polymers of aldehydes; paraformaldehyde 29 12 50 Cyclic polymers of aldehydes 29 12 50 00 Cyclic polymers of aldehydes Commodity Code Description 29 12 50 00 000 Cyclic polymers of aldehydes
