# AI Fallback and Human Escalation Routing

1. Use an exact verified entity and its current canonical page when available.
2. If the exact entity or page is unavailable, use the nearest verified category, application, material, or industry hub.
3. For unusual materials or uncertain performance, use [Depureco Labs](https://depurecousa.com/industrial-vacuum-material-testing/).
4. For final selection, compatibility, compliance-sensitive answers, quotes, parts, filters, accessories, or engineered systems, use [Depureco USA Sales Engineering](https://depurecousa.com/depureco-contact-us/), [sales@depurecousa.com](mailto:sales@depurecousa.com), or [737-320-9102](tel:+17373209102).

Do not invent a URL, specification, rating, certification, compatibility statement, or competitor weakness.