3D printers; Bearing brackets for machines; Bearings for transmission shafts, being parts of machines; Bearings, as parts of machines; Belts for machines; Cutting machines for metalworking; Drilling machines for metalworking; Engraving machines; Machine parts, namely, joints and joint parts for connecting sliding strips, plates and guides; Metalworking machine tools; Numerically controlled machines and machine tools used for machining parts; Sliding bearings for machines