UMC [UNITED MICROELECTRONICS] 6-K: www.umc.com Description 99.1 Announcement on 2018/02/26: Represent subsidiary
[www.umc.com Description 99.1 Announcement on 2018/02/26: Represent subsidiary He Jian Technology (SuZhou) Co., Ltd. to announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2018/02/09: January Revenue 99.3 Announcement on 2018/02/09: the trading and pledge of UMC ]