High-pressure pumps for use in oil or gas well hydraulic fracturing operations; High-pressure pumps for washing appliances and installations; High pressure washers; Machines for cleaning surfaces using high pressure water; Multi-purpose high pressure washers; Multi-purpose steam cleaners; Permanent magnet motors; Pipe cleaning machines; Power-operated cleaning machines, namely, lances designed to mechanically remove scale and sludge from secondary side tubesheets in steam generators in nuclea...