Declarations and compliance

Last updated: 2026-11-10

This page states what we can document for our products, and — just as usefully — what we do not claim. A declaration that cannot be traced to a certificate, a test report or a batch record is marketing, and buyers eventually discover the difference. We would rather lose a point in a comparison table than win it with a document we cannot produce.

Management systems

The company operates a quality management system and an environmental management system, and holds certification to ISO 9001 and ISO 14001. Certificates are supplied on request so the legal entity, the scope and the validity dates can be checked against the issuing body. We do not publish certificate numbers on this website, because a number without the certificate beside it proves nothing and can be copied by anyone.

Product testing

Catalogue values are measured by the methods named on each model page:

These are test methods, not certifications. "Tested to GB/T 528" means the tensile figure was obtained that way; it does not mean a third party approved the product.

EU Construction Products Regulation and EN 15651

Sealants for non-structural use in buildings fall under the harmonised standard EN 15651, and CE marking under Regulation (EU) No 305/2011 requires testing to that standard plus factory production control. Our construction grades are routinely tested to the GB/T methods above. We do not claim CE marking to EN 15651 by default, and we will not print a CE mark on a carton unless the test report and the declaration of performance exist for that product.

If your project requires EN 15651, say so in the enquiry. We will tell you whether the report exists for the model in question — and if it does not, we will say so rather than supply a document from a different product.

REACH and SVHC

REACH applies to substances and mixtures placed on the EU market. A sealant is a mixture, so there is no such thing as a "REACH certificate" for it; what exists is a safety data sheet, a classification, and — where a substance on the ECHA Candidate List is present above 0.1% by weight — a declaration to that effect.

We provide an SVHC declaration per product and per batch on request, dated against the Candidate List in force at the time of shipment. If you need it for customs or for a customer's questionnaire, ask with the model and the destination and we will issue it with the documents.

Safety data sheets and labelling

An SDS is available for every model, in English and, where the destination requires it, in the local language. Cartons are labelled with the product name, model, batch number, production date, net content and the hazard statements that apply to that formulation. Classification varies between products — a solvent-free one-component PU and a solvent-borne primer are not in the same category — so the label on the carton, not a generic statement on this page, is the authoritative one.

Origin and customs

Goods are manufactured at Wangshigong Industrial Zone, Wei County, Hebei Province, China. The certificate of origin is issued by the competent authority for each shipment. The HS classification is confirmed per shipment with the forwarder, because the correct heading depends on the product form and on the importing country's tariff schedule; we do not publish a single code that would be wrong for half the range.

Shelf life and storage

One-component PU sealants carry a shelf life of 9–12 months when stored unopened below 25 °C; activators and primers carry six months. Heat shortens both — every 10 °C above 25 °C roughly halves the remaining life — so a container that crossed the tropics has spent part of its allowance. The production date on the carton, not the shipment date, starts the clock.

Packaging and waste

Cartridges are polypropylene with an aluminium or plastic piston; sausages are a laminated film; barrels are steel or HDPE depending on the model. Empty packaging should be handled under the waste rules of the destination country. Cured PU sealant is an inert solid; uncured residue must not be discharged to drains.

What we do not claim

• We do not claim CE marking to EN 15651 unless the report exists for that model.
• We do not claim a "REACH certificate" — no such document exists for a mixture.
• We do not publish certificate numbers that cannot be checked with the issuing body.
• We do not claim approvals from vehicle manufacturers unless an approval letter is provided.
• We do not state a service life in years; joint design, movement and exposure decide it.

Requesting documents

Send the model, the batch number if you have it, the destination country and the document you need to ryan@pu-karmind.net. Typical requests — SDS, batch test record, SVHC declaration, certificate of origin — are answered within two working days; a document we do not hold gets an honest "we do not have it" rather than a template.