Construction planning, building 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 services; plumbing services; plumbing services; carpentry contractor services; installation of lighting, wires, signage and audio visual equipment for trade shows, conventions, exhibitions, expositions, meetings, conferences, and special events; an...