Pneumatic conveyors; Cylinders for machines; Compressed air pumps; Vacuum pumps; Silencers for vacuum pumps; Suction pads for vacuum pumps; Air filters for vacuum pumps; Shock absorbers for machines, other than for vehicles; Filters as parts of vacuum pump and air compression machines; Couplings for machines, not for land vehicles; Valves parts of machines; Pressure valves parts of machines; Robot machines, namely, industrial air and vacuum pump robots; Machine gripping tools for industrial a...