instruments and apparatus measuring the characteristics of semiconductor devices, namely, generators and instruments for the measurement of electrical and thermal parameters, automatic telephone apparatus, electric circuit testers, transistors, diodes, thyristors, capacitors, resistors, rectifiers, switches, power switching devices, transistors with integrated anti-parallel fast recovery diodes, transistors with integrated anti-parallel avalanche diodes, electronic ballast switching devices, electronic transformer switching devices, sensors, electrical connectors, integrated circuits, printed circuit boards, electric cables, electric wires, over-voltage protectors, surge protectors, circuit protectors, lightening protectors, surge absorbers, over-current protectors, electrical power supply units, electrical starting apparatus for fluorescent lights, parts for all the aforesaid goods