7 Battery powered, remote controlled, or manually operated machines and transporters used to push, pull, or lift shopping carts, hospital beds, wheelchairs, and other loads, materials, or equipment; power-operated lift used to transport and place portable storage containers; power-operated lifts for moving, parking and storing land vehicles; loading and unloading machines; lifting installations for the transport of persons and goods; power-assisted material handling machines, namely, palletizers, pallet movers, pallet handlers, pallet jacks, cart pushers, cart pullers, power-operated vehicles used to push and pull loads, and power operated lift and tilt tables, namely, pallet load levelers, rack stackers, order pickers, and skid lifters; replacement parts for each of the foregoing