Child codes
These are the next codes most users should open after this page.
Heading 8540 identifies the main commodity family Thermionic, cold cathode or photo-cathode 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) within Chapter 85.
These are the next codes most users should open after this page.
Heading 8540 identifies the main commodity family Thermionic, cold cathode or photo-cathode 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) within Chapter 85.
Use this heading when the product name is close but still too broad for the subheading or line level.
Compare the subheadings under Heading 8540 and then choose the line that matches the exact product wording.
Heading 8540 identifies the main commodity family Thermionic, cold cathode or photo-cathode 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) within Chapter 85.
Use this heading when the product name is close but still too broad for the subheading or line level.
Compare the subheadings under Heading 8540 and then choose the line that matches the exact product wording.