UMC [UNITED MICROELECTRONICS] 6-K: www.umc.com Description 99.1 Announcement on 2018/03/13: UMC will
[www.umc.com Description 99.1 Announcement on 2018/03/13: UMC will attend investor conferences on 2019/03/20 99.2 Announcement on 2018/03/18: To announce related materials on acquisition of machinery and equipment 99.3 Announcement on 2018/03/22: To announce the registration of capital reduction due ]