Advanced Semiconductor Engineering, Inc (ASE) is a semiconductor manufacturing and testing services provider that produce, market and sell integrated circuit test program design, front-end engineering test, wafer probe, wafer bump, substrate design and supply, wafer level package, flip chip, system-in-package, final test and electronic manufacturing services. It manufactures its products through owned and operating facilities and plants; and market and sells through a network of sales and marketing offices and sales representatives. The company also carries out substrate production; and real estate business through its subsidiaries ASESH AT and Universal Scientific Shanghai, primarily in China. ASE caters to information, communications, consumer electronics, automotive electronics, medical treatment, industrial applications, aviation, navigation, national defense and transportation sectors in US, Asia, Europe, and other regions. It has operating facilities in Asia and the US facilities; plants in Asia Pacific; and sales offices in Taiwan, the US, Belgium, France, Singapore, the PRC, Korea, Malaysia, Japan and other countries. ASE is headquartered in Kaoshiung, Taiwan.