A11K

control, measurement and regulation devices for solar thermal and solar electric installations

heating installations using solar power, solar thermal and solar electric installations; solar collectors; flat plate solar collectors; vacuum tubular solar collectors; heat regenerators for solar thermal installations; heat exchangers for solar thermal installations; expansion containers for solar thermal installations

consulting and assistance in conducting business with regard to solar collectors, solar thermal installations and solar electric installations; Arranging of trading transactions and commercial contracts and providing business services in the nature of business advice with regard to solar collectors, solar thermal installations and solar electric installations for third parties; retail services featuring of solar collectors, solar thermal installations and solar electric installations

fitting in the nature of installation and maintenance of solar thermal installations

development services for third parties in connection with new products in the fields of solar collectors, solar thermal installations and solar electric installations; development services for third parties in connection with new products in the field of building technology installations; engineering services, namely, technical project planning in the fields of heating, climate, sanitation and electrical installations, building technology planning, cogeneration plants; engineering, namely, providing services of an engineering company in the fields of heating, climate, sanitation and electrical installations