UMC [UNITED MICROELECTRONICS] 6-K: (Original Filing)
[www.umc.com Description 99.1 Announcement on 2017/03/31: The Change of Deputy Spokesperson 99.2 Announcement on 2017/04/05: UMC will attend the investor conference on 2017/04/11 99.3 Announcement on 2017/04/05: Represent subsidiary United Semiconductor (Xiamen) Co., Ltd.to announce related materials]