| 1. | Philips Components | | | Manufacturers of piezoelectric plates, discs, rings and bimorphs for sensors, actuators, and transducers. www.piezoceramics-philips.com |
| 2. | Hanics | | | Manufacturer of microphones and speaker units for communication and audio products. www.hanics.com |
| 4. | Lubell Labs Inc. | | | Manufacturer of underwater loudspeakers, underwater speakers, and piezoelectric underwater audio transducers. www.lubell.com |
| 5. | Lundahl Instruments, Inc. | | | Designer and manufacturer of non-contact ultrasonic sensor systems for tank level monitoring, process control, environmental monitoring, and collision avoidance applications. www.lundahl.com |
| 6. | Massa | | | Designer and manufacturer of electroacoustic products including sensors, transducers, and ultrasonics. www.massa.com |
| 7. | Union Enterprise Co | | | Piezo buzzer and element for all kinds of alarm, home appliances and security system. www.unionetrade.com |
| 11. | Eleceram Technology Co. Ltd. | | | Manufacturer of piezoelectric ceramics, piezoelectric transformers and ultrasonic transducers. Includes product data sheets and company news. www.eleceram.com.tw |
| 12. | Britek SA, Inc. | | | A line of ultrasonic transducers specialize in thickness gauge, flaw detection, nuclear transducers, and custom built transducers. www.briteksa.com |
| 13. | Ningbo East Electronics | | | Chinese Manufacturer of piezo ceramic electroacoustic products such as buzzers, ringers, alarms, transmitter and receivers. www.east-mingtao.com |
| 14. | Chintele Quartz Technology Co Ltd | | | A Chinese manufacturer of piezoelectric quartz, quartz products and single crystal optical products for use in the telecommunications and general time and frequency industries. www.chintele.com |
| 15. | Ormal Electronics Limited | | | Offers piezoelectric cable sensors for impact sensing, acoustic transducers and perimeter security. www.ormal.co.uk |
| 17. | Kaili Electrionic Factory | | | Manufacturers of buzzers, plug and jack, audio/video cables, fuse box. From China. www.kaili-buzzer.com |
| 18. | APC International, Ltd. | | | A manufacturer of piezoelectric ceramics and piezoelectric products for customers in aerospace, automotive, consumer, engineering and design, industrial, manufacturing, medical products, military. www.americanpiezo.com |
| 19. | SPL Ltd. | | | Manufacturer of buzzers, transducers, speakers, receivers, microphones, ultrasonic sensors, connectors, cable assemblies, wire harness. Factories are located in China. www.spl-hk.com.hk |
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