37 General contractor services, namely, installation and dismantling of equipment and displays for trade shows, exhibitions and conventions; construction planning, building, installing, repairing and dismantling of exhibits, displays, booths, kiosks, stands, racks, and backdrops for others for trade shows, conventions, exhibitions, expositions, meetings, conferences, and special events; electrical contractor, plumbing and carpentry contractors services, and rigging of lighting, wires, signage and audio visual equipment contracting services for trade shows, conventions, exhibitions, expositions, meetings, conferences and special events; electrical, plumbing and carpentry services, and rigging of lighting, wires, signage and audio visual equipment for trade shows, conventions, exhibitions, expositions, meetings, conferences, and special events; custom building of structures for trade shows, conventions, exhibitions, expositions, meetings, conferences, and special events, namely, exhibits, displays, booths, kiosks, stands, racks, and backdrops for others