Explanatory notes
… 7409.31 ‑ ‑ In coils 7409.39 ‑ ‑ Other 7409.40 ‑ Of copper‑nickel base alloys (cupro‑nickel) or copper‑nickel‑zinc base … worked (e.g., cut to shape, perforated, corrugated, ribbed, channelled, polished, coated, embossed or rounded at the … metal, of copper ( heading 74.19 ). (c) Insulated electric strip ( heading 85.44 ). …