Subheading 291212: Aldehydes; Acyclic, without other Oxygen Function, Ethanal (a … etc.
Subheading 291219: Aldehydes; Acyclic, without other Oxygen Function, N.E.C. in … etc.
Subheading 291221: Aldehydes; Cyclic, without other Oxygen Function, Benzaldehyd … etc.
Subheading 291229: Aldehydes; Cyclic, without other Oxygen Function, other than … etc.
Subheading 291241: Aldehydes; Aldehyde-ethers, Aldehyde-phenols and Aldehydes wi … etc.
Subheading 291242: Aldehydes; Aldehyde-ethers, Aldehyde-phenols and Aldehydes wi … etc.
Subheading 291249: Aldehyde-alcohols, Aldehyde-ethers, Aldehyde-phenols and Alde … etc.
Subheading 291250: Aldehydes; Cyclic Polymers of Aldehydes
Subheading 291260: Paraformaldehyde