3D printers; Servo-motors; Cooling radiators for motors and engines; Cutting machines; Direct current motors; Drives for motors; Fan belts for motors and engines; Industrial robots; Laser engraving machines; Laser engraving machines for woodworking; Numerically controlled machines and machine tools used for machining parts; Power operated metalworking machine tools, namely, drilling tools; Pressure transducers as parts of machines; Servo-drives for motors