Electric and/or electronic components, namely, Antenna switching devices for use with radio communication systems utilizing multiple different frequency bands, particularly for use with portable telephones, mobile telephones and/or walkie talkies; Filters, Microwave filters, Diode switches, Microwave oscillators, Infrared sensors, Ultrasonic sensors, Capacitors, Isolators, Coaxial cable connectors, Antennas, Resonators, Electronic tuners, Deflection yokes, Gyro compasses, Flyback transformers...