Sourcing glassy carbon powder from China

Duty and waste controls

Read from the UK Trade Tariff on 4 October 2026, heading 2803 covers carbon blacks and other forms of carbon not elsewhere specified or included. Glassy carbon powder within this heading uses 2803 00 00 00 and carries 0% duty from China. No anti-dumping or countervailing duty or suspension is recorded. The table shows powder variants sharing the same tariff line.

The tariff attaches import and export waste controls. Confirm whether the shipment is new product or waste. For waste from China imported into England under notification controls, the exporter must apply to the competent authority in the dispatch country for consent. Ask your customs broker to confirm the applicable waste procedure and any export restrictions before arranging a return shipment.

Confirm the composition, powder form and any additives through finding your commodity code. For related material within the wider heading, see hard carbon anode powder.

Specify carbon identity, particle shape and purity

State whether you need milled particles or spheres, the particle-size distribution, permitted oversize, carbon content, ash, moisture and named metal impurities. Agree the test methods and acceptance limits in the purchase specification. Ask for production-route information and analytical evidence supporting the glassy carbon identity, rather than accepting a generic carbon powder description.

Specify the milling equipment and contact materials so the supplier can address metal or ceramic contamination. For conductive applications, agree how resistance will be measured, including sample preparation and compaction. Trial the sample in your actual process before approving the production specification.

Substances sold in Great Britain must be classified and labelled under its chemical classification and labelling rules. Before importing a substance you have not previously imported, consider whether UK REACH registration is required. Obtain the safety data sheet and assess dust handling; businesses must control workplace risks from substances or processes that might harm health.

Worked duty example

Illustrative example, not a quote: Illustrative order: 20 kg of milled glassy carbon powder under 2803 00 00 00, invoiced at £2,000 free on board, with £300 of freight and insurance to the UK. The customs value is £2,300. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £2,300, so it is £460. 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 batch certificate and analytical results to the approved glassy carbon sample and agreed production route.

Particle size: sample across the batch and check distribution, oversize and particle shape using the agreed preparation and measurement methods.

Cleanliness: check ash, moisture and named metal impurities against the contract, including contamination associated with milling.

Packing: inspect seals, liners and containers for leaks, moisture and foreign material; reconcile batch labels and net weights with the packing list.

What goes wrong

A generic carbon powder can be supplied against a glassy carbon description without adequate identity evidence. Oversize particles, milling contamination and moisture can also make a batch unsuitable even when its carbon content passes. Compare production samples with the approved sample and investigate discrepancies before releasing the lot.

Resistance results can differ when the supplier and buyer use different compaction or sample preparation. Agree the method before ordering and retain a sealed batch sample. Use quality inspection to organise sampling and packaging checks alongside laboratory analysis.

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.