Sourcing Natural Kieserite from China
Natural kieserite from China carries 0% UK import duty, with no anti-dumping or countervailing measure recorded. Waste shipment controls apply when the material is waste; confirm its status before shipping. Specify mineral origin, nutrient analysis and particle grading. Cambridge China Bridge sources natural kieserite.
Zero duty on natural kieserite
Read from the UK Trade Tariff on 1 October 2026, natural kieserite falls within 2530 20 00 00, described as kieserite and epsomite, natural magnesium sulphates. Duty for goods from China is 0%, with no anti-dumping or countervailing measure or suspension recorded. The supplied tariff facts contain only this commodity line relevant to natural kieserite.
The tariff attaches import and export waste controls. Waste shipment controls apply only when the material is waste. For imports into England under notification controls, the exporter applies to the dispatch country's competent authority for consent; shipment starts after consent from the Environment Agency and other authorities involved. For a China shipment, confirm waste status and the applicable procedure with your customs broker before loading, especially for recovered material or processing residues.
Give your broker the mineral analysis, origin and processing description to confirm the commodity code. The description should establish that the shipment is natural kieserite. For other minerals within this heading, see our vermiculite and perlite guide.
| Goods | Commodity code | Duty | Anti-dumping or countervailing duty on China |
|---|---|---|---|
| Natural kieserite | 2530 20 00 00 | 0% | None |
Specify mineral identity and nutrient analysis
Ask for the mine or deposit, the producer and a description of crushing, screening and any further treatment. Agree magnesium and sulphur content, the basis on which results are expressed, water-soluble content, moisture, insoluble matter and relevant contaminants. Require an analysis certificate tied to the supplied batch, rather than a generic magnesium sulphate specification.
Specify particle grading and acceptable fines for your intended blending or spreading equipment. Approve a representative sample and agree a dissolution check where your process depends on solubility. Record bag construction, liner, closure, batch identification and storage conditions in the purchase specification.
UK REACH regulates chemicals placed on the market in Great Britain; check the position for the actual mineral and its processing. If selling as ‘UK fertiliser’ in Great Britain, Defra's guidance requires UK establishment and testing by a UK approved laboratory where testing is required. Agree the sales description and testing route before printing bags.
Worked duty example
Illustrative example, not a quote: Illustrative order: 25 tonnes of natural kieserite in lined bulk bags under 2530 20 00 00, invoiced at £9,000 free on board, with £2,400 of freight and insurance to the UK. The customs value is £11,400. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £11,400, so it is £2,280. 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 producer, mineral description and batch identification across the bags, invoice and analysis certificate.
Analysis: sample the delivered batch and compare magnesium, sulphur, moisture and insoluble matter with the agreed specification.
Grading: sieve a representative sample, check fines and lumps, and trial the material through the intended equipment.
Packing: inspect liners, closures, tears, leakage and wet patches on arrival; photograph damage before moving or opening affected bags.
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What goes wrong
A generic magnesium sulphate offer can leave natural origin and processing unclear. Analysis may quote total nutrient content where the buyer expects water-soluble content, or use a different reporting basis. Resolve these differences before accepting the sample or approving the shipping description.
Moisture ingress, caking and excess fines can make a chemically acceptable batch unsuitable for handling or spreading. Keep the approved sample and compare it with arrival samples. Agree sampling, acceptance and claims procedures before shipment; our inspection guide explains how to prepare the inspection brief.
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.
Frequently asked questions
What is the UK import duty on natural kieserite from China?
The supplied tariff facts record 0% duty under 2530 20 00 00, with no anti-dumping or countervailing measure and no suspension.
Do waste controls apply to mined natural kieserite?
Waste shipment controls apply only if the material is waste. The tariff attaches a waste control, so confirm the shipment's status and any required procedure with your customs broker.
What should a kieserite analysis certificate show?
Ask for batch identity, magnesium and sulphur content, the reporting basis, water-soluble content, moisture, insoluble matter and agreed contaminant results.
How do I check kieserite before accepting delivery?
Match the batch documents, sample for analysis and grading, inspect bags for moisture and leakage, and check handling or dissolution against the approved sample.