Machines and machine tools for printing three-dimensional parts, molds, models and prototypes for industrial, commercial or construction purposes; motors and engines other than for land vehicles; machine couplings and transmission components other than for land vehicles; concrete mixers; hydraulic and pneumatic control mechanisms for machines, engines or motors; compressors for machines; filtering machines for the injection of concrete, cement, clay, asphalt, pitch, bitumen, gypsum and geopol...