DOOSAN TESNA Inc. provides semiconductor testing services in South Korea. The company offers test program development, wafer probe test, package final test, backend, and turn-key services. It provides test services for various semiconductors used in mobile devices, automobiles, appliances, industrial goods, and security. The company was formerly known as Tesna Inc. and changed its name to DOOSAN TESNA Inc. in April 2022. DOOSAN TESNA Inc. was founded in 2002 and is headquartered in Pyeongtaek-si, South Korea.