284911 Machine tools for working stone, ceramics, concrete or similar mineral materials or for cold working glass

28491130 Sawing machines for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass 28491150 Grinding or polishing machines for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass 28491170 Machine-tools for working stone, ceramics, concrete, asbestos-cement or like mineral materials or for cold working glass (excluding sawing machines, grinding or polishing machines)