ASE Technology Holding Co., Ltd., together with its subsidiaries, provides semiconductors packaging and testing, and electronic manufacturing services in the United States, Taiwan, Asia, Europe, and internationally. It develops, constructs, sells, leases, and manages real estate properties; produces substrates; offers information software, equipment leasing, investment advisory, and warehousing management services; commercial complex, after-sales, and support services; manages parking lot services; processes and sells computer and communication peripherals, electronic components, telecommunications equipment, and motherboards; and imports and exports goods and technology. ASE Technology Holding Co., Ltd. was founded in 1984 and is based in Kaohsiung, Taiwan.