9 Fuel cells; information technology, audiovisual, multimedia and photographic equipment; magnets, magnetization and demagnetization devices; scientific and laboratory apparatus and equipment for physical reaction by means of electricity; apparatus, instruments and cables for electricity; optical apparatus and equipment, amplification devices and correctors; safety, security, protection and signalling devices and equipment; measuring, detection and monitoring instruments, apparatus and controllers; control equipment, namely, electronic apparatus for controlling gas-dynamic flow machines such as compressors, boosters, fans, pumps and power turbines; apparatus for scientific research and laboratories, teaching apparatus and simulators; scientific, nautical, surveying, photographic, cinematographic, optical, weighing, signalling, life-saving and teaching apparatus and instruments for conducting, switching, transforming, storing, regulating and controlling electricity; power electronics, namely, electronic components for regulating and operating electric motors and generators; parts and accessories for all the aforesaid goods, included in this class