NAICS 333923 — Overhead Traveling Crane, Hoist, and Monorail System Manufacturing 
BEA sector: Material handling equipment manufacturing
Activity: Aerial work platforms manufacturing
Activity: Automobile wrecker (i.e., tow truck) hoists manufacturing
Activity: Block and tackle manufacturing
Activity: Boat lifts manufacturing
Activity: Chain hoists manufacturing
Activity: Cranes, overhead traveling, manufacturing
Activity: Davits manufacturing
Activity: Hoists (except aircraft loading) manufacturing
Activity: Locomotive cranes manufacturing
Activity: Monorail systems (except passenger-type) manufacturing
Activity: Overhead traveling cranes manufacturing
Activity: Pulleys (except power transmission), metal, manufacturing
Activity: Ship cranes and derricks manufacturing
Activity: Winches manufacturing
Activity: Wire rope hoists manufacturing