Multi-region flammability + chemical standards, how does Magento handle US vs EU vs AU?

Mattress flammability standards are not internationally aligned. The same SKU sold in 3 regions needs 3 different certification packages + 3 different PDP cert badges:

• United States, 16 CFR Part 1633 (federal open-flame standard, mandatory) plus TB117-2013 (California, smolder standard, effectively national). Both are mandatory and both need cert PDFs stored on the Magento product.
• European Union, EN 597-1 / EN 597-2 (smoldering cigarette and small open flame). Required across all EU member states. Different test methodology than US, separate cert needed.
• United Kingdom, the Furniture and Furnishings (Fire) (Safety) Regulations 1988, which is stricter than EU and arguably the world’s strictest mattress flammability standard. Uses match-test + cigarette-test + crib-5 fabric test. A US-only mattress cannot be sold legally in the UK without re-certification.
• Australia, AS/NZS 4220 covers bedding flammability. Slightly different methodology than US or EU but well-defined; most US brands selling into AU just commission an AU-specific certification.

Magento integration: multi-source inventory (MSI) splits stock by region; each region’s store view surfaces the right cert PDF + right PDP badge for that region’s standards; the catalog hides SKUs not certified for the current region. Pattern works the same way as fashion multi-region but with cert-PDF storage on every mattress product. ~$3,000, $5,000 of build for the multi-region + cert-routing layer.