UMC [UNITED MICROELECTRONICS] 6-K: (Original Filing)
[www.umc.com Description 99.1 Announcement on 2019/04/17: UMC will convene Q1 2019 Investor Conference 99.2 Announcement on 2019/04/23: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2018/04/24: UMC announced its operating results for the first quarter of]