water softening apparatus and installations; water purifying apparatus and machines; water-filtering installations; heat regenerators; pipes being parts of sanitary installations; purification installations for sewage and waste water; distillation apparatus, not for scientific purposes; regulating and safety accessories for water apparatus; water filtering apparatus; water intake apparatus; water conduits installations in the nature of valves and timer valves; water distribution installations in the nature of pipes and filters; water purification installations; water supply installations; water cooling installations, namely, water coolers; filters for drinking water; pressurized water tanks; water sterilizers; incinerators; oxyhydrogen burners; cooling installations for liquids; regulating accessories for water or gas apparatus and pipes; steam boilers, other than parts of machines; steam * production * [ generating ] installations

Advertising; business management; business administration; office functions; business management and organization consultancy; business efficiency experts; commercial business appraisal; advisory services for business management; professional business consultancy; business investigations; commercial or industrial company management assistance; administrative management of installations for water production and treatment, systems for waste and waste water management and treatment; cost price analysis; project management services in the field of business management assistance; collection and systematization of data in a central file; computerized file management; accounting, namely, bookkeeping; sales promotion for others; procurement services, namely, purchasing apparatus and installations for water production, management and treatment, and of systems for the treatment of waste and waste water, for others; commercial information and advice for consumers; retail stores featuring apparatus and installations for water production, management and treatment, and of systems for the treatment of waste and waste water, and business assistance services for the wholesale marketing and sales promotion of apparatus and installations for water production, management and treatment, and of systems for the treatment of waste and waste water; commercial administration of the licensing of the goods and services of others

Scientific and technological services, namely, design, engineering, research, development and testing in the fields of water treatment, water quality monitoring services, water analysis, and environmental testing and inspection services; engineering services for the construction of water treatment and purification plants, waste treatment plants and other municipal infrastructure facilities; research and development of new products for others; industrial analysis and research services in the field of water treatment; chemical research services; chemical analysis; bacteriological research services; biological research services; technical research services; surveying; technical project study, namely, conducting scientific feasibility studies; construction drafting; calibration; consultancy in the field of energy-saving; research in the field of environmental protection; all the above-mentioned services especially in connection with apparatus and instruments for water treatment, extraction and production and for waste water treatment and management