Sewer cleaning machines and high-pressure cleaners; machines for sludge suction, sludge suction with water reuse, dry suction, high-pressure flushing and high-pressure cleaning, including for cleaning and maintenance of sewers, tanks, silos and pipelines; machines for processing sludge and dry substances; drainage systems and water reuse systems (not included in other classes) for the drainage of sludge and waste water, including mobile and stationary drainage systems; machines for processing...