UMC [UNITED MICROELECTRONICS] 6-K: www.umc.com Description 99.1 Announcement on 2017/03/01: To announce
[www.umc.com Description 99.1 Announcement on 2017/03/01: To announce related materials on acquisition of machinery and equipment 99.2 Announcement on 2017/03/09: Represent subsidiary United Semiconductor (Xiamen) Co., Ltd.to announce related materials on acquisition of machinery and equipment 99.3 A]