7 [ Machines for the processing and purification of liquids, namely, water, oil, emulsions and mixtures of oil and water, waste water, as well as cooling lubricants; ] Machine tools and power tools for the processing and purification of liquids, namely, water, oil, emulsions and mixtures of oil and water, waste water, as well as cooling lubricants; industrial filtering machines for the processing and purification of liquids, namely, water, oil, emulsions and mixtures of oil and water, waste water, as well as cooling lubricants; filtering machines for chemical processing; filters for motors; filters for industrial manufacturing machines; [ components for filtration machines and machine tools for purifying liquids, namely, membrane filter, gravity filter, vacuum filter, pressure filter, surface skimmers, magnetic filter, band filter, sand, chemical and reverse osmosis filters; ] portable filtration units for the processing and purification of liquids, namely, water, oil, emulsions and mixtures of oil and water, waste water, as well as cooling lubricants