Sourcing copper vapour chambers from China

UK duty on copper vapour chambers

Read from the UK Trade Tariff on 30 September 2026, heading 7419 covers other articles of copper. Every supplied line carries 0% duty for goods from China. The supplied facts list no anti-dumping or countervailing duty, suspensions or attached import controls.

The table shows product variants against the same candidate line, 7419 80 90 98, for other copper articles. These are not separate tariff subdivisions. Confirm the commodity code using the drawing, materials and condition as imported, particularly where the chamber comes with fins or other equipment parts. See the related copper heat pipes guide.

Specify the chamber and thermal test together

Specify the copper grade, outline, thickness, contact-face flatness, mounting features and surface finish. Record the wick construction, working fluid, internal supports and sealing method. Agree which changes need your approval, including changes to the wick or filling process.

Set the thermal acceptance test around your assembly: heat-source footprint, heat input, orientation, cooling arrangement, interface material and clamping force. Agree temperature measurement positions and the acceptable temperature difference. Ask for results on production samples rather than relying on a catalogue heat rating.

Official guidance excludes component parts sold on a business-to-business basis from the scope of the RoHS Regulations. For an equipment customer's assessment, request material information covering the copper, plating and joining materials. Agree the evidence with the buyer through testing and certification.

Worked duty example

Illustrative example, not a quote: 800 custom copper vapour chambers for a trial production batch, illustrative under 7419 80 90 98, invoiced at £20,000 free on board, with £800 of freight and insurance to the UK. The customs value is £20,800. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £20,800, so it is £4,160. With no duty, the only import tax is the VAT, which a VAT-registered importer can usually reclaim. The import duty and VAT guide explains each step.

Inspection checklist

Dimensions: measure thickness, outline, mounting positions and contact-face flatness against the approved drawing; check the fit in your actual assembly.

Thermal performance: repeat the agreed test on sampled chambers in the intended orientation, recording temperatures and test conditions against the approved sample.

Seal and surface: review leak-test records, inspect seams and filling closures, and check for dents, swelling, scratches and uneven plating.

Packing and traceability: match batch identification to test records and check that individual supports protect the faces from bending and abrasion. Set the sampling plan through the quality inspection guide.

What goes wrong

A chamber can fit the drawing yet perform poorly because of leakage, an unsuitable wick or a changed fluid charge. A test with a different heat-source footprint, orientation or cooling arrangement can conceal a problem in your assembly. Compare production samples under the same conditions as the approved sample.

Distorted faces increase the gap to the heat source, while crushed internal supports can damage the fluid-return path. Avoid bending, drilling or trimming a sealed chamber to correct fit. Resolve drawing changes before production and inspect packing before dispatch.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For repeat volumes, see container programmes.