What this heading covers
Thermionic, cold cathode or photocathode valves and tubes (for example, vacuum or vapour or gas filled valves and tubes, mercury arc rectifying valves and tubes, cathode ray tubes, television camera tubes) — this is the standard HS heading text for chapter 85. Products are classified here at the 4-digit level; the 6-digit subheadings below split it further. Duty rates and import rules are set by each destination country on top of this shared structure.
This heading has no standard 6-digit split in this dataset; national tariff lines extend it to 8–10 digits.
Before you ship
Confirm the final 8–10 digit national line with your customs broker, and check whether the product needs pre-shipment certification in the destination market — see our SONCAP (Nigeria), SABER (Saudi Arabia) and CE marking (EU) guides.
Chapter 85 · Heading 8540 · Source: WCO HS 2022 nomenclature (public). Other headings in this chapter: 8501 · 8502 · 8503 · 8504 · 8505 · 8506 · 8507 · 8508 · 8509 · 8510 · 8511 · 8512 · 8513 · 8514