Explanatory notes
… treated with acid 0506.90 ‑ Other The products of this heading are used mainly as carving materials, for the manufacture of glue and gelatin or as fertilisers. The heading covers : (1) Bones and horn‑cores (inner bones of … these goods fall in heading 96.01 or in other more specific headings. (3) Bones treated with acid , i.e., bones, the …