Class 001: Chemicals for use in industry and science; chemicals for the treatment, processing and purifying of water, drinking water or waste water; chemical preparations in the nature of filtering materials used in water, drinking water and waste water; Class 007: water and wastewater processing machinery and equipment, namely, clarifiers, dissolved air flotators, aerators, sedimentation drivers, thickeners, travelling screens separators, digester covers, mixers, flocculators, trough skimmers, and rotary distributors; Class 011: regulating accessories for water supply, namely, appliances and installations for heating, steam generating, refrigerating, and ventilating of water supply; water purification units; water distillation units; water demineralization units; apparatus and installations for the treatment of surface water and artesian water to create drinking water or ultra-pure water; apparatus and installations for purifying household and industrial waste water; apparatus and installations for water treatment using reserve osmosis processes; filters as parts of household and industrial installations; apparatus and installations for filtering liquids, namely, water, drinking water and waste water; parts for the aforesaid equipment, apparatus and installations; Class 037: repair and construction building and rebuilding services in the fields of water and wastewater processing facilities and equipment, namely, installation, start-up, maintenance, servicing and repair of apparatus and installations for the treatment, processing, purifying and recycling of water, drinking water and wastewater; Class 040: Water treatment services; Water treatment and purification; rental of commercial water filters; rental of water purification equipment; wastewater treatment services; Class 042: engineering and design consulting services in the fields of water and water treatment processing facilities and equipment; scientific and technological services, namely, research and design in the fields of the treatment, processing, purifying and recycling of water, drinking water and waste water; consulting services for others in the fields of designing, planning, engineering, and implementation of project management of the treatment, processing, purifying and recycling of water, drinking water and waste water