Sector guides

Sourcing plastic sitz baths from China

Plastic sitz baths classified within heading 3922 carry a flat 6% UK duty from China, with no listed trade remedies. Consumer products must be safe in normal or reasonably foreseeable use; medical-device status depends on intended purpose and mode of action. Cambridge China Bridge sources plastic sitz baths.

Written by Bono Xu, Founder, Cambridge China Bridge · 4 min read · Updated 2026-11-02

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UK duty and sitz-bath classification

Read from the UK Trade Tariff on 1 October 2026, heading 3922 covers plastic baths, washbasins, bidets and similar sanitary ware, alongside lavatory seats, covers and cisterns. The supplied tariff has no dedicated sitz-bath line. The table repeats possible commodity lines for different forms; it does not establish their classification.

All supplied lines carry 6% duty for goods from China. The supplied record lists no anti-dumping or countervailing duty, suspension or attached import control. These tariff findings do not establish product-safety compliance.

Give your customs broker photographs, material details, drawings and intended use to confirm the commodity code. Describe whether the product rests over a toilet, stands independently or folds for storage. Compare the related stainless steel sitz-bath guide when considering a different material.

UK duty on these lines for goods of Chinese origin (one code per row), read from the UK Trade Tariff on 1 October 2026.
GoodsCommodity codeDutyAnti-dumping or countervailing duty on China
Plastic baths: possible line for bath-form sitz baths, subject to confirmation3922 10 00 006%None
Other plastic sanitary ware: rigid sitz basins, subject to classification confirmation3922 90 00 006%None

Specify toilet fit, resin and intended use

Specify the resin, permitted recycled content, rim shape, basin depth and supporting surfaces. For an over-toilet basin, provide drawings of the toilet openings it should fit and approve samples on those toilets. For folding designs, specify the flexible material, joint construction and how the basin stays open when filled.

Agree the filling, overflow and emptying arrangement, any hose or bag supplied, cleaning method and packing protection. Request tests using the proposed water temperature and cleaning products. Set acceptance criteria for rim flex, leakage, sharp moulding flash and surface defects before production.

Consumer products must be safe in normal or reasonably foreseeable use. Medical-device status depends on the stated intended purpose and mode of action. Review treatment claims before approving packaging. If the product is a medical device, registration is required before lawful placement on the Great Britain market; arrange a testing and certification review before ordering.

Worked duty example

Illustrative example, not a quote: Illustrative order: 300 plastic sitz baths, with classification assumed for calculation under 3922 90 00 00, invoiced at £6,000 free on board, with £1,500 of freight and insurance to the UK. The customs value is £7,500. Duty at 6% is £450. Import VAT at 20% is charged on the customs value plus duty, £7,950, so it is £1,590. Import taxes total £2,040; a VAT-registered importer can usually reclaim the VAT, so the lasting cost is the £450 of duty. The import duty and VAT guide explains each step.

Inspection checklist

Fit: check production samples on the agreed toilets, with water added, for rocking, slipping and rim deformation.

Material and finish: compare resin records and samples with the specification; inspect skin-contact surfaces for sharp edges, cracks, rough joints and moulding flash.

Water handling: fill and empty samples; check plugs, overflow paths and supplied connections for leakage, and exercise folding joints where present.

Arrival and instructions: check for crushed rims and split joints after unpacking; compare contents, cleaning instructions and product claims with approved artwork. Use the inspection guide to brief the checks.

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What goes wrong

A basin can look suitable in a photograph yet rock on the buyer's toilet or flex when filled. Poorly supported rims, leaking plugs and folding joints that trap dirty water are practical failure points. Test the production design on the agreed toilets and repeat filling, emptying and cleaning before approving shipment.

Unreviewed treatment claims can leave the product's regulatory status unresolved. Settle the intended purpose before printing cartons, and compare the final listing with the approved wording. Protect rims and folding joints from compression during packing.

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 plastic sitz baths from China?

The supplied tariff record shows 6% on all lines within heading 3922, with no listed trade remedies or suspensions. Confirm the sitz bath's commodity code before declaring it.

Which commodity code should I use for a plastic sitz bath?

The supplied tariff has no dedicated sitz-bath line. Ask your customs broker to assess the design, material and intended use against the bath, washbasin and other sanitary-ware descriptions.

Is a plastic sitz bath a medical device?

Do not assume its status from the name alone. Medical-device status depends on intended purpose and mode of action. Review the proposed claims before ordering.

How do I check whether a sitz bath fits UK toilets?

Agree the toilet drawings and models it should fit. Test filled production samples for stable support, rim flex, overflow direction and safe removal, rather than relying on a universal-fit claim.

Sources

  1. UK Trade Tariff — commodity codes and duty
  2. General product safety regulations: Great Britain
  3. Borderlines with medical devices and other products in Great Britain
  4. Regulating medical devices in the UK

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