Opto-electronic components and devices, namely, optical fibres, electrical cords for exclusive use in optical fibres, connectors for optical fibres, connecting plugs, connecting jacks, laser diodes (LD), modules of laser diodes (LD Module), semi-conductor lasers, modules of semi-conductor lasers, light emitting diodes (LED), photo-LED and photo-diode (PD) modules, avalanche photo diodes, silicon wafers, compound semiconductor wafers, thermistors, circulators, transistors, optical memory cards, microprocessors, printed circuits, printed circuits boards (PCB), connectors for printed circuits boards, magnetic cores, electric conductors, conductors for optical fibres, electrical wires and cables, resistance wires, microlenses, optical packages for integrated circuits, namely, dual inline packages, butterfly packages, transistor outline (TO) packages, and discrete packages, optical couplers, optical passive components and optical active components, namely, optical switches, wavelength division multiplexers (WDM), and demultiplexers, computer terminals, electric injunction boxes, switchboxes that include electric switches, electrical branch boxes, electronic control panels, commutators, and transformers, electrical distribution boxes, capacitors, oscillators, modules of optical transceivers, modules of optical transmitters, optical receivers, attenuators, isolators, opto-isolators, interference filters, power meters for optical fibres, optical detectors, energy measuring devices, namely, optical power meters, spectrum analyzers, amplifiers, optical time domaine reflecting (OTDR) meters