[Class : 11] Cooling Installations And Machines; Water Purification Installations; Water Softening Apparatus And Installations, Desalination Plants, Air Filtering Installations; Steam Generators; Refrigerating Machines, Apparatus And Installations; Steam Generating Installations And Apparatus; Industrial Boilers; Boilers For Heating Installations; Heating Systems Composed Primarily Of Tubes, Pipes And Manifolds Through Which Warm Or High Temperature Water Circulates; Heat Exchangers, Other Than Parts Of Machines; Steam Valves; Boiler Pipes Of Heating Installations; Heating Furnaces; Solar Water Heaters; Solar Collectors For Heating; Solar Energy Powered Heating Installations And Apparatus.