DUCE MADISON & ASSOCIATES

423310 - Lumber, Plywood, Millwork, and Wood Panel Merchant Wholesalers; 423390 - Other Construction Material Merchant Wholesalers; 423510 - Metal Service Centers and Other Metal Merchant Wholesalers; 423610 - Electrical Apparatus and Equipment, Wiring Supplies, and Related Equipment Merchant Wholesalers; 423710 - Hardware Merchant Wholesalers; 423720 - Plumbing and Heating Equipment and Supplies (Hydronics) Merchant Wholesalers; 423810 - Construction and Mining (except Oil Well) Machinery and Equipment Merchant Wholesalers; 423830 - Industrial Machinery and Equipment Merchant Wholesalers; 423840 - Industrial Supplies Merchant Wholesalers; 424120 - Stationery and Office Supplies Merchant Wholesalers; 459410 - Office Supplies and Stationery Retailers; 493110 - General warehousing and storage

Engage in the completion of large construction projects involving roadways, sidewalks, parking lots, and bridge paving and repaid and works on underground utilities, storm drainage systems, streetscapes, roadway electrical, traffic signal and signage, and excavation projects in the Metropolitan Washington DC Area.