Color [colour] brightening chemicals for industrial purposes; concrete preservatives, except paints and oils; rubber preservatives; cement preservatives, except paints and oils; preservatives for tiles, except paints and oils; brickwork preservatives, except paints and oils; masonry preservatives, except paints and oils; preservatives for pharmaceutical preparations; wax-bleaching chemicals; cement waterproofing chemicals, except paints; concrete-aeration chemicals; agglutinants for concrete