Explanatory notes
… of precious metals ( heading 28.43 ), of radioactive elements ( heading 28.44 ), of rare-earth metals, of yttrium … ( heading 38.10 ). (g) Natural or synthetic precious or semi‑precious stones ( headings 71.02 to 71.05 ). 28.14 ‑ … carbonate, cyanides, amines (e.g., naphthylamine). It emulsifies fatty matter and resins, and it acts as a …