3D printing pens; Abrasive belts for power-operated sanders; Air compressors; Air filters for mechanical purposes; Air hammers; Anti-friction bearings for machines; Axial fan condensers; Bicycle assembling machines; Blades for power tools; Centrifugal blowers; Door closers, electric; Dynamo belts; Electric food choppers; Electric generators; Electric lawnmowers; Pressure switches as parts of machines; Push rods for motors and engines; Sparking plugs for automotive engines; Stands for hydrauli...