...及半缩醛，不论是否 Aldehydes; cyclic polymers of aldehydes; paraformaldehyde 醛，不论是否含有其他含氧基;环聚醛;多聚甲醛 Halogenated, sulphonated, nitrated or nitrosated derivatives of products of heading No.29.12 品目2912产品的卤化、磺化、...
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...es 缩醛及半缩醛，不论是否 Aldehydes; cyclic polymers of aldehydes; paraformaldehyde 醛，不论是否含有其他含氧基;环聚醛;多聚甲醛 Halogenated, sulphonated, nitrated or nitrosated derivatives of products of heading No.29.12 品目2912产品的卤化...
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