Sourcing liquid crystal shutters from China
Liquid crystal optical shutters and relevant parts classified in heading 9013 carry 0% UK duty from China, with no recorded trade remedies. The main compliance distinction is between components supplied to businesses and finished electrical equipment. Cambridge China Bridge sources liquid crystal optical shutters.
Duty on liquid crystal optical shutters
Read from the UK Trade Tariff on 1 October 2026, the relevant other optical appliance and other parts lines carried 0% duty from China. Heading 9013 covers lasers other than laser diodes and optical appliances not specified elsewhere in the chapter. The supplied records show no anti-dumping or countervailing duty and no suspensions for these lines.
The UK Trade Tariff attaches a cultural-object export licence control to the other optical appliance line. Official guidance states that importing cultural objects into Great Britain has no licensing requirement under that regime. Ask your customs broker to confirm how the attached control applies to your shipment from China; the parts line has no attached control in the supplied records.
The table shows product forms sharing the relevant tariff lines, rather than separate shutter-specific codes. Confirm the commodity code from the shutter's construction, function and supplied assembly. See the wider optical devices guide for the rest of the heading.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Unmounted liquid crystal optical shutters, subject to classification | 9013 80 80 00 | 0% | None |
| Parts and accessories for optical shutters, subject to classification | 9013 90 80 00 | 0% | None |
Specify the optical path and drive conditions
Specify the clear aperture, glass dimensions, mounting arrangement, polariser orientation and operating wavelength range. Agree open-state transmission, closed-state leakage and switching behaviour using your intended light source and detector. State whether the supply includes a bare cell, a mounted shutter or a driver, and define the drive waveform, connections, temperature range and unpowered state.
Official RoHS guidance distinguishes components sold between businesses from finished assemblies: those components are outside its scope as supplied, but an in-scope final assembly must comply. A manufacturer incorporating a component must determine and demonstrate its compliance. Request material and component evidence matching the approved shutter, polarising films, connections and any driver.
For finished electrical assemblies, assess whether the electromagnetic compatibility rules apply. Official guidance covers electrical equipment liable to generate electromagnetic disturbance, subject to exceptions. Where those rules apply, the importer must retain the declaration of conformity and technical documentation for 10 years after the apparatus is placed on the market.
Worked duty example
Illustrative example, not a quote: Illustrative small-business batch of liquid crystal optical shutters under 9013 80 80 00, invoiced at £24,000 free on board, with £1,200 of freight and insurance to the UK. The customs value is £25,200. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £25,200, so it is £5,040. 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
Optical performance: measure transmission and closed-state leakage across the agreed aperture, wavelength range and polarisation arrangement.
Switching: test opening, closing, trigger response and the unpowered state with the agreed driver and waveform; repeat at the agreed operating temperatures.
Construction: inspect glass for chips, scratches and contamination, polarising films for lifting, and mounting surfaces and connections against the approved drawing.
Arrival and records: check protective packaging, moisture damage, model and batch identification, supplied driver identity and whether the documentation matches the delivered construction.
Working out your own order? Send us the product on WhatsApp and we reply the same working day: WhatsApp us
What goes wrong
A shutter can appear dark to the eye yet leak light at the buyer's working wavelength. Incorrect polariser orientation, uneven transmission, unsuitable drive conditions or temperature-dependent switching can undermine the application. Test production samples in the intended optical arrangement before approving the batch, and agree how changes to the cell, films or driver will be reviewed.
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.
Frequently asked questions
What is the UK import duty on liquid crystal optical shutters from China?
The supplied tariff records show 0% duty for relevant optical appliances and parts in heading 9013, with no recorded anti-dumping or countervailing duty. Confirm the code for the supplied product.
Does a bare shutter need the same compliance evidence as a finished unit?
Official RoHS guidance treats components sold between businesses differently from final assemblies. Obtain component evidence for the intended finished product and assess any supplied driver separately.
How do I test whether an optical shutter blocks enough light?
Measure closed-state leakage with your intended light source, wavelength range, detector and polarisation arrangement. Visual darkness alone is not a useful acceptance test.
What should I send a Chinese shutter factory?
Send the optical layout, aperture and mounting drawing, wavelength range, transmission and leakage criteria, switching requirements, drive conditions and required unpowered state.