The Blue Book record

America's industrial directory, now read by AI too

Every US industrial company in the record is listed under one or more of these 3,224 categories. Choose one below to see how AI assistants answer buyers looking for a supplier in it, state by state.

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The record, by the numbers

Companies listed536,645

Industry categories3,224

Index cells published33

Latest finding

Blast Cleaning Equipment in Ohio

11 of 70 companies named · Measured September 23, 2026

Read the finding

Only categories with a published Index3,224

marks a category with a published Index report for at least one state.

America's industrial directory, now read by AI too

Category directory