UL + ANSI/ASME spec + California Prop 65 flagging per SKU, how do you handle it?

Three product attributes + display logic at PDP / cart / checkout.

• ul_listing, UL-listed / UL-recognised / not-applicable. Required for any corded power tool sold in the US; OSHA-required for jobsite use. Display at PDP as a badge (“UL Listed” with the file number).
• ansi_asme_spec, comma-separated spec list (e.g. ANSI Z87.1, ASME B107.6 for safety glasses + sockets). Display as a spec table on PDP. Required for trade-pro purchases, contractor liability insurance often requires ANSI-compliant tools.
• prop65_required, boolean. If true, show the California Prop 65 warning on PDP, cart, and checkout for California shipping addresses. Magento checkout JS conditionally renders the warning based on shipping state. Failing to display the warning is a civil penalty up to $2,500 per day per violation.

The Prop 65 warning text is specific: “WARNING: This product can expose you to chemicals including [chemical name], which is known to the State of California to cause [cancer / birth defects or other reproductive harm]. For more information go to www.P65Warnings.ca.gov”. The chemical varies (lead for brass fittings, formaldehyde for some sealants, di-isononyl phthalate for soft-grip handles).

Automation: a Magento DataPatch loads the chemical-per-SKU mapping from a CSV (suppliers usually provide one annually). At PDP render, if shipping address state = CA and prop65_required = true, render the warning block above add-to-cart.

This is hygiene work, not a competitive moat, but skipping it gets you sued. Build cost: ~$2k, $4k including the CSV import patch.