9 Scientific apparatus, namely, gas storage modules comprising of power converters, power supply, electric switches, power line conditioners, step-up and step-down transformers, generators and voltage stabilizing power supply, power conditioning modules, power conversion modules, power supply modules, switching electronics modules, step-up boast electronic modules, step-down buck electronic modules, switch mode power supply modules, power supply matching modules and also consisting of canisters, bottles, gas storage cylinders, gas storage and water storage tanks and electric generators; apparatus for conducting, storing, switching, transforming, accumulating, regulating and/or controlling electricity, namely, DC/DC converters, AC/DC converters, AC/AC converters, DC/AC converters, electrodes, electrical connectors; electronic instruments which monitor and control the performance of DC/DC converters, AC/DC converters, AC/AC converters, DC/AC converters; fuel cells; electrolysers; photoelectrolysers; apparatus for the control and monitoring of fuel cells, electrolysers and photoelectrolysers, namely, electronic modules for detecting gas flow rate, electronic modules for detecting water flow rate, and electronic modules for detecting liquid flow rate; photovoltaic solar modules, photovoltaic cells, photovoltaic panels; solar panels, solar cells for the production of electricity; scientific testing apparatus and instruments for the purposes of measuring the amount of hydrogen and oxygen produced by the process of photoelectrolysis for use in connection with apparatus for photoelectrolysis; scientific testing apparatus and instruments for the purposes of measuring the amount of fuel produced for use in connection with apparatus for converting hydrogen into electricity; solar cells; thermostats, other than valves, for central heating installations; computer software for monitoring, regulating and controlling DC/DC converters, AC/DC converters, DC/AC converters, AC/AC converters, fuel cells, electrolysers, photoelectroalysers, central heating systems, hot water systems; thermostats; rheostats; instruments and apparatus for temperature control in central heating installations and hot water installations, namely, thermostats; structural parts and fittings for all the aforesaid goods