7 Material handling machines, namely, palletizers, case elevators, automatic pallet dispensing machines and automatic slip sheet dispensing machines; Power-operated pallet jacks for lifting and moving pallets; Hydraulic lift tables; Industrial container washing equipment, namely, machines for washing the exterior surface of industrial containers, where the equipment is manually-operated by the user; Truck bed-mounted material handling machinery primarily for use in the construction materials delivery industry, namely, hydraulic extendable material conveyors, mechanical extendable material conveyors, and truck bed material lifting platforms; Shipping container washing and disinfecting machines, namely, machines for washing and disinfecting the exterior surface of shipping containers, where the equipment is manually-operated by the user;