Piezoelectric devices, namely, piezoelectric actuators, piezoelectric sensors, piezoelectric speakers, piezoelectric oscillators, piezoelectric switches, piezoelectric transducers, piezoelectric filters as electronic components, piezoelectric vibration detectors, piezoelectric ignitions as electronic components, piezoelectric power generators as electronic components, piezoelectric sonars, and piezoelectric microphones; Electric actuators, namely, piezoelectric actuators; piezoelectric devices in the form of films, namely, piezoelectric actuators, piezoelectric sensors, piezoelectric speakers, piezoelectric oscillators, piezoelectric switches, piezoelectric transducers, piezoelectric filters as electronic components, piezoelectric vibration detectors, piezoelectric ignitions as electronic components, piezoelectric power generators as electronic components, piezoelectric sonars, and piezoelectric microphones; pressure sensors; position sensors, namely, LED position sensors, sensors for lens, sensors for hard disc, sensors for belts, sensors for doors, and sensors for pens; sensors for determining position, velocity, acceleration, temperature, and deformation; measuring or testing machines and instruments, namely, measuring systems concerning distance, sound pressure, temperature, velocity, acceleration, and deformation comprising electric sensors, sensors for determining distance, sound pressure, temperature, velocity, acceleration, position and deformation; Electronic components, namely, piezoelectric switches; power distribution or control machines and apparatus, namely, power controllers, power distributing boxes, keyboards, keypads, buzzers, speakers, button switches, face plates, and displays; Oscillators, namely, piezoelectric oscillators; Electric or magnetic meters and voltage, amperage, and magnetism testers; Audio speakers, namely, piezoelectric speakers; audio equipment and their parts, namely, audio equipment for vehicles, household purposes, industrial purposes and portable players, namely, stereos, speakers, amplifiers, equalizers, crossovers, speaker housings, and displays, audio electronic components, namely, surround sound systems; telephones and their parts, namely, keyboards, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; cellular phones and their parts, namely, keyboards, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; digital cameras and their parts, namely, digital camera accessory in the nature of keyboards, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; video equipment and their parts, namely, video recorders and players, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; Electric actuators, namely, lens driving actuators for camera modules for mobile phones, lens driving actuators for digital cameras, lens driving actuators for optical pickups; telecommunication machines and apparatus, namely, telecommunication transmitters, telecommunication exchangers, and telecommunication receivers; smartphones and their parts, namely, keyboards, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; computers and their parts, namely, keyboards, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; keyboards for computers and their parts, namely, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; tablet computers and their parts, namely, keyboards, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; mobile computers and their parts, namely, keyboards, keypads, buzzers, speakers, button switches, faceplates, displays, and housing; semiconductor devices; Electric buzzers, namely, piezoelectric buzzers; piezoelectric alarm device, namely, alarms for the detection of inflammable gases, smokes and fires, security and anti-intrusion alarms