3
Abrasive, grinding, polishing and sandblasting preparations, abrasive and polishing materials, abrasive materials, abrasive corundum or carborundum, hard sintered ceramic materials
6
Frames of metal, cabins for grinding, polishing, sandblasting and abrasive machining, cases, screens for work carried out during the machining of metal materials, containers, grilles, doors, frames and accessories for metal cabins
7
Machines, machine tools and parts therefor, electric and pneumatic abrasive apparatus, grinding machines, polishing machines and calenders, sanding vehicles, cutting machines, cutting apparatus, cleaning apparatus for hard surfaces, compressors, alternators, generators, blowing machines, lifting apparatus, grippers (machines), parts of machines, bearings, motors and engines, guards (parts of machines), housings, robots, pumps, lifting apparatus, clutches, grinding machines, machine tools, lathes and milling machines