What attributes should a circuit breaker record carry? A ball valve? A safety harness? Nobody publishes the answer, because it lives in the heads of the people who have run the category for twenty years — and in the filter rails of whoever is beating you on search.
So we wrote it down. 105 categories across 16 verticals: the attributes that matter, the ones most catalogs are missing entirely, and the way each category's suppliers disagree about spelling the same value. No signup, no gate.