Sourcing PPS resin from China

PPS resin: 0% UK duty

Read from the UK Trade Tariff on 6 November 2026, heading 3911 covers specified resins and polymers in primary forms. Its named poly(thio-1,4-phenylene) line, 3911 90 13 00, covers PPS resin and carries 0% duty for goods from China. The supplied record shows no anti-dumping or countervailing measure and no suspension on this line.

The tariff attaches import and export waste controls. Waste shipment controls apply only when the material is waste. For PPS from China described as scrap, recovered material or waste, ask your customs broker to confirm the applicable requirement before shipment. Do not assume that a resin description resolves its waste status.

The table repeats the PPS commodity line for different buying descriptions; these are not separate tariff subdivisions. Give your broker the composition, additives and physical form to confirm the commodity code, especially for filled compounds or blends. For the wider heading, see hydrocarbon resins.

Specify the PPS chemistry and processing grade

Name the manufacturer and exact grade, linear or branched structure, granules or powder, colour, virgin or recovered feedstock, and whether the material is unfilled or compounded. For compounds, specify the reinforcement type and content, additives and permitted substitutions. Agree melt viscosity with its test conditions, moisture, ash content and mechanical properties relevant to your component.

Use a sample in your own mould and processing conditions before approving bulk supply. Agree drying instructions, processing guidance, bag construction and batch traceability. A datasheet for another PPS grade is not an acceptance specification.

Confirm with HSE the UK REACH registration position for the polymer, monomers and reactants, including any applicable exemption. Obtain their identities and the supplier's registration information before importing. Assess the registration position of additives separately rather than assuming the whole compound is covered.

Worked duty example

Illustrative example, not a quote: One tonne of PPS resin granules; illustrative order, values are not a quotation under 3911 90 13 00, invoiced at £18,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £19,500. Duty at 0% is £0. Import VAT at 20% is charged on the customs value plus duty, £19,500, so it is £3,900. 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: check manufacturer, grade and batch against the purchase order, bag labels and certificate of analysis.

Composition: check the agreed filler and ash results, and investigate unexplained changes in density or colour.

Processing: compare batch viscosity using the agreed method and run a moulding trial for filling, flash, surface defects and warpage.

Packing: check seals, liners, contamination, fines and moisture protection; retain a labelled sample from each batch. See quality inspection.

What goes wrong

A supplier substitutes a different PPS structure or filler package while keeping a similar grade description. Flow changes, thin sections fail to fill, or moulded parts warp. Mixed pellets, black specks and excess fines can also disrupt processing. Compare the delivered batch with the approved sample rather than relying on a generic datasheet.

An attractive sample may come from a different producer than the bulk material. Require the producer and batch records, agree written approval for formulation changes, and isolate a suspect delivery until the composition and processing results have been checked.

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.