Sourcing lithium-selective resins from China

UK duty on lithium-selective resins

Read from the UK Trade Tariff on 4 October 2026, heading 3914 covers ion exchangers based on polymers of headings 3901 to 3913, in primary forms. Lithium-selective polymer resin falls within the other line, 3914 00 00 90, subject to confirmation of its composition and form. The supplied tariff data shows 0% duty for China, no anti-dumping or countervailing measures and no suspension.

The tariff attaches waste import and export controls. For a China-to-England shipment subject to waste notification controls, the exporter must apply to the competent authority in China for consent. If buying spent or discarded resin, ask your customs broker to confirm the applicable waste requirements before shipment.

Only the other line is relevant here; the separately listed nickel-loaded agarose suspension is a different product. Mineral ion exchangers are classified elsewhere. Confirm the commodity code using the composition and supplied form, and see the wider ion exchange resin guide.

Specify lithium recovery on your actual feed

Specify the polymer matrix, selective functional chemistry, shipped ionic form, moisture content, particle size distribution and packing. Ask the supplier to identify any inorganic active material carried within the beads. Obtain the composition information and safety data sheet. Chemical classification and labelling must be carried out by someone with scientific competence.

Agree a trial using your intended brine or process liquor. Record lithium concentration, competing sodium, magnesium and calcium, acidity, temperature and contact conditions. Ask for lithium uptake on an explicit wet or dry basis, recovery into the eluate, eluate composition, regenerant consumption and performance after repeated regeneration. Agree acceptance criteria before ordering.

Worked duty example

Illustrative example, not a quote: Illustrative pilot batch of lithium-selective polymer resin in 25 litre bags under 3914 00 00 90, invoiced at £18,000 free on board, with £2,000 of freight and insurance to the UK. The customs value is £20,000. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £20,000, so it is £4,000. 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 grade, ionic form and batch references on packaging, datasheets and the batch analysis certificate.

Lithium performance: test retained samples with the agreed feed and procedure; compare lithium uptake, recovery and competing-ion carryover with the approved sample.

Bead condition: check particle size, cracked beads, fines and moisture against the agreed specification.

Packing: inspect seals and leaks, confirm storage instructions and check that labels correspond to the supplied formulation. Use the inspection guide to agree sampling.

What goes wrong

A capacity result from a simple lithium solution does not establish performance in your brine. Compare suppliers using the same feed and test conditions. Watch for capacity quoted on different moisture bases, inadequate evidence of competing-ion rejection and missing regeneration results.

Cracked beads, fines and drying are resin problems identified in the wider guide. Check incoming batches before charging a process vessel. Keep the approved sample, test procedure and acceptance criteria available for repeat orders.

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.