37 Maintenance, repair, reconstruction, service, namely, upkeeping, monitoring, rental, technical inspection for conveying machines, namely, vertical conveyors for conveying goods in vertical direction, roller conveyors, belt conveyors, chain conveyors; pallet transport systems used to transport pallets and consisting of roller conveyors, transport and conveyor bands, transport and conveyor rollers, transport and conveyor chains, transport and conveyor straps; packaging machines; packaging machines including associated feeding and removing mechanics for feeding and removing the goods to be packed and the packed goods respectively; material roll replacing devices for replacing consumed material rolls by fresh material rolls; transfer units and turntables for connecting the flow of goods to be conveyed between different conveyor lines and for changing the transport direction of the goods to be conveyed; pallet transfer units and pallet turntables for connecting the flow of pallets between different conveyor lines and for changing the transport direction of the pallets; palletizing machines; palletizing machines including associated feeding and removing mechanics for feeding and removing the goods to be palletized and the pallet carrying the goods respectively; pallet shuttle cars for moving pallets from one place to another; pallet lifts; palletizing robots; parts of the aforementioned goods; machine production lines consisting of one or more of the aforementioned goods and used for the transport of pallets, unit loads and containers; maintenance, repair, reconstruction, service, namely, upkeeping, monitoring, rental , technical inspection for electric controls for conveying machines, namely, vertical conveyors for conveying goods in vertical direction, roller conveyors, belt conveyors, chain conveyors; pallet transport systems used to transport pallets and consisting of roller conveyors, transport and conveyor bands, transport and conveyor rollers, transport and conveyor chains, transport and conveyor straps; packaging machines; packaging machines including associated feeding and removing mechanics for feeding and removing the goods to be packed and the packed goods respectively; material roll replacing devices for replacing consumed material rolls by fresh material rolls; transfer units and turntables for connecting the flow of goods to be conveyed between different conveyor lines and for changing the transport direction of the goods to be conveyed; pallet transfer units and pallet turntables for connecting the flow of pallets between different conveyor lines and for changing the transport direction of the pallets; palletizing machines; palletizing machines including associated feeding and removing mechanics for feeding and removing the goods to be palletized and the pallet carrying the goods respectively; pallet shuttle cars for moving pallets from one place to another; pallet lifts; palletizing robots; parts of the aforementioned goods; machine production lines consisting of one or more of the aforementioned goods and used for the transport of pallets, unit loads and containers