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236220: Commercial & Institutional Building Construction 236210: Industrial Building Construction 236118: Residential Remodelers 238330: Flooring Contractors 238340: Tile & Terrazzo Contractors | 238350: Finish Carpentry Contractors 238310: Drywall & Installation Contractors 238130: Framing Contractors 238140: Masonry Contractors 238220: Plumbing, Heating, and A/C |