1st Extraordinary General Meeting for FY2021

1. The 1st Extraordinary General Meeting for FY2021 Meeting Agenda (the “Meeting”) of Taiwan Styrene Monomer Corporation (the “Company”) will be convened at HOWARD PLAZA HOTEL KAOHSIUNG (No.311, Chi-Hsien 1st Road, Kaohsiung, Taiwan) at 9:30 a.m. on Thursday, October 14, 2021. 2. You could contact Yuanta Securities the Stock Transfer Agent (Tel: +886 2 2586-5859) if you do not receive the notice of the Extraordinary General Meeting. 3. During COVID-19 epidemic period, shareholders are encouraged to make use of the electronic voting through STOCKVOTE platform of Taiwan Depository & Clearing Corporation (https://www.stockvote.com.tw) during the period from September 29, 2021 to October 11, 2021. If shareholders want to attend in person, please wear a mask all the time and temperature check is required before entering the venue. If shareholder’s forehead temperature is above 37.5°C or ear temperature is above 38°C, a shareholder would not be allowed to enter into the meeting.