1 Chemical preparations for use as densifiers on colored concrete; chemical preparations for use as hardeners on colored concrete; chemical preparations for use in maintaining colored concrete; chemical preparations for use as stain repellent treatments on colored concrete; chemical preparations for use as densifiers on polished concrete; chemical preparations for use as hardeners on polished concrete; chemical preparations for use in maintaining polished concrete; chemical preparations for use as stain repellent treatments on polished concrete; chemical preparations for use as densifiers on concrete; chemical preparations for use as hardeners on concrete; chemical preparations for use in maintaining concrete; chemical preparations for use as stain repellent treatments on concrete; chemical preparations for use as densifiers for flooring surfaces, namely, concrete, terrazzo, masonry, natural stone, cast stone, tile, cement-based surfaces, luxury vinyl tile, vinyl composition tile, vinyl-based surfaces, resilient flooring, and wood; chemical preparations for use as hardeners for flooring surfaces, namely, concrete, terrazzo, masonry, natural stone, cast stone, tile, cement-based surfaces, luxury vinyl tile, vinyl composition tile, vinyl-based surfaces, resilient flooring, and wood; chemical preparations for use in maintaining flooring surfaces, namely, concrete, terrazzo, masonry, natural stone, cast stone, tile, cement-based surfaces, luxury vinyl tile, vinyl composition tile, vinyl-based surfaces, resilient flooring, and wood; chemical preparations for use as stain repellent treatments on flooring surfaces