UMC [UNITED MICROELECTRONICS] 6-K: (Original Filing)
[www.umc.com Description 99.1 Announcement on 2020/01/06: The Change of Deputy Spokesperson 99.2 Announcement on 2020/01/21: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2020/01/21: UMC will convene Q4 2019 Investor Conference 99.4 Announcement on 2020/]