Tibbetts Industries, Inc.
- Developer and manufacturer of miniature electromagnetic and electro-acoustical transducers typically used by the hearing aid, medical device, and security industry.
- http://tibbettsindustries.com

Ormal Electronics Limited
- Offers piezoelectric cable sensors for impact sensing, acoustic transducers and perimeter security.
- http://www.ormal.co.uk

Suzhou Sonavox Electronics Co.,Ltd.
- A manufacturer of speakers. Application areas include, car audio, TV and home theater.
- http://www.ypage.com/sonavox

Changzhou Union Electronics
- Manufacturers of buzzers and speakers used in computer modems, mobile phones, cordless phones and pagers.
- http://www.china-buzzer.com

Myntahl Corp.
- Manufacturer of buzzer, alarm, piezo alarm, electronic buzzers, alarm annunciator, siren, magnetic alarm transducers and external-driven piezo.
- http://www.myntahl.com/

Changzhou Xichun Electronics Co., Ltd.
- Manufacturer of buzzers and electronic acoustical components. Product photos and specifications.
- http://www.xichun-buzzer.com/

SPL Ltd.
- Manufacturer of buzzers, transducers, speakers, receivers, microphones, ultrasonic sensors, connectors, cable assemblies, wire harness. Factories are located in China.
- http://www.spl-hk.com.hk

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.
- http://www.americanpiezo.com

Kaili Electrionic Factory
- Manufacturers of buzzers, plug and jack, audio/video cables, fuse box. Jiangsu, China.
- http://www.kaili-buzzer.com/

Beijing Dongfang Jinrong Ultrasonic Electrical Equipment Co.,Ltd.
- A manufacturer of ultrasonic equipment producing piezoelectric ceramic transducers and ultrasonic devices.
- http://www.chinapiezoceramic.com

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.
- http://www.chintele.com

Ningbo East Electronics
- Chinese Manufacturer of piezo ceramic electroacoustic products such as buzzers, ringers, alarms, transmitter and receivers.
- http://www.east-mingtao.com/

Britek SA, Inc.
- A line of ultrasonic transducers specialize in thickness gauge, flaw detection, nuclear transducers, and custom built transducers.
- http://www.briteksa.com/

Eleceram Technology Co. Ltd.
- Manufacturer of piezoelectric ceramics, piezoelectric transformers and ultrasonic transducers. Includes product data sheets and company news.
- http://www.eleceram.com.tw/

JL World Corporation Ltd
- Manufacturer of sound generators and microphones.
- http://www.jlworld.com/

Wisdom Plus Sdn Bhd
- Manufacturer of buzzers and telephone ringers.
- http://www.wisdomplus.com

Unique Sound Co., Ltd.
- Specialist manufacturer of SMD audio transducers.
- http://www.unique-sound.co.kr

Shianlin Electronic Co., Ltd.
- Manufacturer of piezo transducers, chips and powder. From Tiawain.
- http://www.sunnytec.com.tw/

Union Enterprise Co
- Piezo buzzer and element for all kinds of alarm, home appliances and security system.
- http://www.unionetrade.com/

Massa
- Designer and manufacturer of electroacoustic products including sensors, transducers, and ultrasonics.
- http://www.massa.com

Lubell Labs Inc.
- Manufacturer of underwater loudspeakers, underwater speakers, and piezoelectric underwater audio transducers.
- http://www.lubell.com/

Guangzhou Sound-Tech Electronic Co., Ltd
- Manufacturer of piezo ceramic electroacoustic products such as buzzers, ringers, alarms and transmitter/receivers.
- http://www.sound-tech.com.cn/indexe.html

Hanics
- Manufacturer of microphones and speaker units for communication and audio products.
- http://www.hanics.com/