COVID-era N95 + KN95 supply chain + FDA EUA expiration, how do you not get burned again?

2020 was a masterclass in PPE supply-chain fragility. 3M N95 lead times stretched from 2 days to 6 months; FDA EUA status on KN95 imports flipped weekly; Bullard PAPR backlogs hit 9 months. Lessons baked into the Magento side:

• Per-SKU lead-time + lot-number + FDA EUA tracking, custom attributes plus an admin grid. PDP shows current lead time honestly (2 days vs. 8 weeks vs. backorder), not the marketing-team-friendly “in stock.”
• FDA EUA expiration management, KN95s authorized under EUA only. When FDA revokes (it revoked the entire Appendix A list in 2021), Magento auto-flags affected SKUs as “no longer FDA-authorized,” freezes the buy-button, and shows a warning + alternative-SKU recommendation. Without this, you sell EUA-revoked masks for weeks and eat compliance fines + return chargebacks.
• Multi-source inventory with priority routing, Magento MSI sources stack ranked: US-domestic source first (Honeywell DC365 in RI, 3M in MN), then EU-CE-marked (Moldex Germany, JSP UK), then verified imports. Algorithm prefers the lower-risk source for each line; falls through automatically.
• Pandemic-mode bulk-order handling, rate-limit per-customer N95 + isolation-gown orders to prevent reseller hoarding (was a real problem in March 2020). Custom Magento module: per-SKU + per-customer-group order ceiling, hidden behind an admin toggle for “emergency mode.”

Safety managers remember 2020 and buy from suppliers that learned. Half my safety + PPE pitches close on this slide.