Doosan Mecatec (formerly Doosan DND) is a subsidiary of Doosan Group which boasts about its 109-year of history as the longest running company in Korea.
Doosan Mecatec makes AMOLED manufacturing equipment (Gen-3.5). We're not sure if it is still selling those machines though.
Company Address
18-12, Euljiro 6-ga
Jung-gu
Seoul
South Korea