37 CONSTRUCTION, REPAIR, INSTALLATION AND DISMANTLING OF EXHIBITS, DISPLAYS AND BOOTHS FOR TRADE SHOW MANAGERS, ORGANIZERS AND EXHIBITORS; ELECTRICAL, PLUMBING, AND CARPENTRY SERVICES, AND RIGGING OF LIGHTING, WIRES, SIGNAGE, ELECTRICAL SERVICES, AND AUDIO VISUAL EQUIPMENT FOR TRADE SHOW MANAGERS, ORGANIZERS, AND EXHIBITORS