IGSR

Electric mixers for agitating waste water in waste water plant; mixing machines; mixing tools specially adapted for connection with said mixers and mixing machines, in particular hyperboloid mixers and propellers; submersible machine motors for said mixing tools; waste water and mud pumps for waste water plants; circulating pumps; lifting cranes; cranes

Ventilating apparatus, in particular gas feeding tubes for connecting gas-feed tubes for aerating waste water in waste water plants, water purifying apparatus, equipment and apparatus for waste water purifying and clarifying installations, waste water purifying and clarifying installations, and installations for mixing and aerating waste water and residual sludge; air distribution apparatus specially adapted for connecting gas feeding tubes being structural components of waste water plants, water purifying apparatus, equipment and apparatus for waste water purifying and clarifying installations, waste water purifying and clarifying installations, and installations for mixing and aerating waste water and residual sludge; hold-down devices specially adapted for gas feeding tubes being structural components of waste water plants, water purifying apparatus, equipment and apparatus for waste water purifying and clarifying installations, waste water purifying and clarifying installations, and installations for mixing and aerating waste water and residual sludge; water purifying apparatus; regulating accessories for water supply, namely, water supply apparatus in the nature of piping and valves; water purifying apparatus for waste water purifying and clarifying installations; waste water purifying and clarifying apparatus being installations, and water purifying apparatus being installations for mixing and aerating waste water and residual sludge; water purification apparatus being installations for conducting biological waste water purification processes

Engineering; technical planning in the nature of engineering; building and construction drafting; technological consultancy in the technology fields of waste water plants, water purifying apparatus, equipment and apparatus for waste water purifying and clarifying installations, waste water purifying and clarifying installations, and installations for waste water treatment, purification and clarification; all the aforesaid services in the field of drainage, water treatment, waste water and/or clarified sludge treatment; computer programming in the field of drainage, water treatment, waste water and/or clarified sludge treatment