Measuring, signaling and life-saving apparatus and instruments, namely, oxygen masks not for medical use, protective face masks not for medical purposes, temperature sensors, pressure relief valves, thermostats; altimeters; speedometers; apparatus for recording, transmission or reproduction of sound or images in aircraft, namely, amplifiers, headphone amplifiers, audio amplifiers, stereo amplifiers, video amplifiers, DVD players, LCD monitors, video displays, video monitors, CD players, tape ...