[Class : 9] Electrolysers [Electrolytic Cells].[Class : 37] Installation, Assembly, Repair, Maintenance And Maintainance Services, In Relation To The Following Goods: Chemical Installations; Installation, Assembly, Repair, Maintenance And Maintainance Services, In Relation To The Following Goods: Alkaline Water Electrolysis Installations For Hydrogen Production; Building, Assembly, Installation, Repair, Maintainance Services In Connection With The Following Goods: Industrial Or Machine Installations For The Electrochemical And Chloralkali Industry And The Production Of Chlorine, Soda Lye Or Potassium Hydroxide; Building, Assembly, Installation Services, Maintenance, Maintainance Services, Repair, Disassembly And Sanitation Services, In Relation To The Following Goods: Electrolysers, Parts And Fittings For Electrolysers; Advisory And Consultancy Services In Connection With All The Aforesaid Services; Commissioning Of Electrochemical Treatment Installations And Chemical Installations In The Context Of Their Installation.[Class : 42] Construction Engineering Services, Namely Construction For Others In The Following Fields: Fuel Batteries And Electrolysers.