Scientific, electric, electronic, measuring, signalling and monitoring appliances and instruments, switches, circuit breakers, isolating switches and other electrical power switching or cutting apparatus, transformers, control boards and distribution panels, transformer stations and other metal-cased or unsheathed electrical installations, boxes and cabinets for electrical equipment, electrical conduits, rectifiers, semiconductors, electric relays, capacitors, resistors, inductors, printed circuits, miniaturised circuits, calculating machines, static converters, radio apparatus and parts thereof, wire and wireless telephone and telegraph equipment, amplifiers, television apparatus, programmers, computers, power supply systems for computers, security microsystems for computers, inverters