stationary and mobile installations and apparatus, namely, machines for water jet cutting; water jet cutting machines; valves as machine components; nozzles as machine parts, namely, swirl nozzles, cutting nozzles, discharge nozzles for discharging liquids, liquids with added abrasive and water suspensions and water abrasive suspensions under high pressure, all parts of water jet cutting machines; water jet cutting machine accessories and spare parts, namely, abrasive mixing units in the natu...