37 Maintenance, repair, and installation of cranes, boom trucks, lifts, forklifts, and semi-tractors; millwright services, namely, installation, erection, maintenance and repair of industrial and mechanical equipment and machines; emergency repair services, namely, repair of industrial and mechanical equipment and machines; commercial deck installation services, namely, roof decks, metal form decks, composite metal decks, nelson stud decks, pre-cast decks, and post tension decks; rental of construction vehicles and equipment, namely, cranes, semi-tractors, trailers, forklifts, boom lifts, personnel baskets, spreader bars, rigging equipment