Sourcing industrial memory cards from China

Zero duty on industrial microSD cards

Read from the UK Trade Tariff on 5 October 2026, heading 8523 covers recording media, including solid-state non-volatile storage devices. Industrial microSD memory cards belong to this product family. The table repeats the relevant blank and recorded lines for different uses; those uses do not create separate tariff codes.

The supplied tariff data shows 0% duty for goods from China under both relevant lines, with no anti-dumping or countervailing duty, suspension or attached import control. Blank cards fall under 8523 51 10 00; the other solid-state storage line is 8523 51 90 00. Import VAT is separate from duty.

Confirm the commodity code using the card specification and details of any content recorded before shipment. For the wider storage family, see solid-state drives.

Specify flash, endurance and host compatibility

Specify usable capacity, flash type and grade, controller, firmware revision and sustained write performance in the intended equipment. Agree the operating temperature range, write workload, endurance test method and acceptance criteria. Ask the supplier to identify what supports its industrial designation rather than accepting the wording on the label.

Approve samples in your actual host equipment, including repeated logging, restart and interrupted-power tests. Define acceptable data loss after power interruption and distinguish that from protection of previously stored files. Agree batch traceability and require approval before changes to flash, controller or firmware.

Obtain a declaration under the hazardous-substances restriction regulations and supporting evidence for the supplied model. Under those rules, importers must check that manufacturer details and conformity marking are correct and clearly identifiable before placing products on the market. If your business is an electrical-equipment producer, annual producer registration is required.

Worked duty example

Illustrative example, not a quote: Illustrative batch of industrial microSD memory cards for an equipment supplier under 8523 51 10 00, invoiced at £40,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £41,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £41,500, so it is £8,300. 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

Capacity and speed: write and read back the full stated capacity on production samples; measure sustained writes in the intended host against the approved specification.

Endurance and recovery: run the agreed repeated-write and interrupted-power tests; check existing files, restart behaviour and error logs.

Identity and condition: compare card identification, firmware and batch records with approved samples; inspect contacts, casing and packaging on arrival.

Documents and content: match the declaration and supporting reports to the supplied model; verify preloaded files and conformity marking. Repeat agreed checks at inspection.

What goes wrong

A card can report the promised capacity yet lose files when written beyond its real storage. Downgraded flash, controller substitutions or firmware changes can also undermine an approved sample. Short speed tests do not show whether the card maintains writes during continuous equipment logging.

Host incompatibility and corrupted files after sudden power loss can leave equipment unable to restart. Keep approved samples and batch test records, test production cards in the intended host, and investigate failures before accepting a replacement batch.

Cambridge China Bridge sources these products for UK businesses, checking the factory and the documents before shipment. See factory verification.