Sourcing laser beam expanders from China

0% duty on the relevant optical appliance lines

Read from the UK Trade Tariff on 1 October 2026, heading 9013 covers lasers other than laser diodes and other optical appliances and instruments not specified elsewhere in the chapter. For a standalone beam expander, 9013 80 80 00 is a candidate code; qualifying parts and accessories may fall under 9013 90 80 00. The table describes product variants sharing these tariff lines.

Both relevant lines carry 0% duty for goods from China, with no anti-dumping or countervailing measures and no suspensions recorded in the supplied tariff data. The optical appliance line attaches a DCMS Export Licence control. Government guidance states that importing cultural objects into Great Britain has no licensing requirement under that regime. Ask your customs broker to confirm the attached control for your shipment; the parts line lists no controls.

Confirm the commodity code using the optical design, assembly drawing and intended function, especially for loose lenses or a complete laser system. The fibre optic isolators guide provides wider heading context.

Specify wavelength, expansion and alignment

State the operating wavelength or wavelength range, input beam diameter, expansion ratio, clear aperture and acceptable output divergence. Agree how beam diameter will be measured. Specify lens material, coating, transmission, wavefront quality, mounting interface and adjustment travel. For pulsed use, give the supplier the pulse conditions and agree evidence supporting coating suitability.

Suppliers must supply safe work equipment, with adequate information for safe use and maintenance. Request instructions covering beam direction, alignment, mounting, cleaning and operating limitations. Assess the expander in the intended laser setup before acceptance, including accessible reflections and beam clipping.

Worked duty example

Illustrative example, not a quote: 50 fixed-magnification laser beam expanders, illustrative order under 9013 80 80 00, invoiced at £10,000 free on board, with £900 of freight and insurance to the UK. The customs value is £10,900. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £10,900, so it is £2,180. 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

Identity: match the model, wavelength marking, coating specification and batch records to the approved sample.

Optics: inspect for scratches, chips, contamination and coating defects; measure transmission at the agreed wavelength.

Beam: measure expansion, divergence and beam centring using the agreed input beam and measurement method.

Mechanics: check mounting fit, adjustment smoothness, locking and alignment after remounting. Record results through an agreed quality inspection.

What goes wrong

A coating intended for a different wavelength can increase loss and reflections. An undersized aperture clips the beam, while decentring or loose adjustment introduces beam steering. A unit can achieve the stated expansion ratio yet fail the agreed divergence or wavefront specification.

Treat coating damage, trapped contamination and alignment movement as separate defects. Keep an approved sample and agree test conditions before production so the factory and receiving laboratory compare the same measurements. Avoid accepting a catalogue transmission figure as a batch test result.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification. For components and parts, see sourcing for manufacturers.