35 Advertising; business management; business administration; professional business consultancy; business monitoring of operational processes from an organizational and professional business standpoint, in particular reading of meters for electricity and thermal energy, gas and water to provide accurate usage data and trends to customers as well as to provide predictive maintenance business information; billing for electric and thermal energy, gas and water; compilation of information into computer databases; wholesale and retail store services featuring regulating and safety fittings, pressure regulators as parts of machines, valves and taps, parts for the aforesaid goods, measuring, signaling, checking and supervision, electric and electronic control and regulating equipment and apparatus, electronic, mechanical and electromechanical meters for electric and thermal energy, gas and water, monitoring and security instruments, apparatus, fittings and systems; wholesale and retail store services featuring gas and air control and safety lines, gas and air actuators, solenoid valves, pressure and temperature sensors; wholesale and retail store services featuring apparatus for controlling or regulating the gas-air mixture ratio in gas burners, gas filters and filter inserts therefor, flame and gas-air mixture monitoring apparatus, fittings for controlling or adjusting the flow rate of gas or air, pressure regulators, burner and boiler controls, heating and air conditioning regulators and parts therefor; wholesale and retail store services featuring heating mixers, remote controls, nozzles for choking the pressure of gas and air, pressure monitoring devices for gas, air and exhaust gas, measuring and detecting apparatus for pressure and temperature; wholesale and retail store services featuring apparatus for recording, acquisition, processing, storage and transmission of data, radio-based apparatus for reading data from meters, software, computer programs recorded on data carriers, downloadable computer programs, parts and fittings for the aforesaid goods; wholesale and retail store services featuring apparatus for lighting, heating and steam generating, burners, taps and valves, ignition devices for gas burners and parts thereof, in particular ignition burners, ignition transformers, sensor and ignition electrodes, gas, air and exhaust gas pressure switches, safety pilots, gas and air throttles, flow meters, thermostats; wholesale and retail store services featuring flame supervision devices and parts thereof, in particular sensors, thermocouples and electrodes, regulating and safety accessories for water and gas installations, gas apparatus, and gas pipes, heating apparatus for solid, liquid or gaseous fuels, heat pumps, fuel cells for heating, parts of and accessories for the aforesaid goods