World Part Search  
Large supplier of electronic components, semiconductors, capacitors and resistors, including hard to find electronic parts & discontinued line items. An online catalogue with a wide range of parts to help you find the parts you need.
Details www.worldpartsearch.com

Xinghua Futtronics Co., Ltd.  
The company is specialized in development, production and sales of acoustic components such as buzzers, speaker, ultrasonic sensors, siren and piezo element in China. The products are widely used in electric appliances, computers and cordless phones.
Details futtrobuzzer.com