7
Pumps for heating installations, heating, solar, pressure and heat pump regulators, feedwater regulators
9
Solar collectors for electricity generation, solar cells, solar panels, solar charge regulators, solar batteries, electric and electronic control devices; photovoltaic installations, solar generators, electric accumulators, refrigerating circuit regulators
11
Solar heating installations, solar collectors (heating), solar furnaces, solar absorbers, heating apparatus, heating installations and systems, heating boilers, refrigerating installations and machines, water-heating apparatus and installations, hot water treatment apparatus and installations, instantaneous water heaters, fresh water stations, heat pumps, heat accumulators, hot water tanks, buffer storage tanks, namely stratification storage tanks, potential heat storage tanks, ice storage tanks and cold accumulators; thermal and electric accumulators, thermostatic valves, switching valves, mixing valves, heating circuit distributors; level-regulating valves for tanks; fittings for water apparatus and water pipes
37
Electrical fitting work; installation and assembly of solar power installations (photovoltaic systems), solar collector installations (solar thermal systems); repair and maintenance of electrotechnical products, mechanical engineering products, precision mechanical products and heating and refrigerating installations for renewable energy generation
40
Rental of solar power installations (photovoltaic systems) and solar collectors (solar thermal systems)
42
Engineering, physics (research), technical consultancy and expertise, in particular in connection with solar engineering, calculation and planning of solar power installations, solar collector installations, electric installations, including electronic apparatus and equipment; rental of computers, including fittings; data processing for the control, regulating and/or monitoring of thermal and/or photovoltaic solar installations; architectural and construction drafting and consultancy with regard to the use of solar power in residential buildings