[Taiwan Styrene Monomer] Announcement of Board Resolution Authorizing the Chairman to Handle Matters Related to the Disposal of Securities

1. Date of occurrence of the event: 115/04/17 2. Company name: Taiwan Styrene Monomer Corporation 3. Relationship with the company (please enter the company or subsidiary): The Company 4. Mutual shareholding ratio: Not applicable 5. Cause of occurrence: To revitalize long-term equity investment value and improve the financial structure, the company plans to dispose of securities as follows: (1) 29,629,597 shares of Mei Hao Enterprise Co., Ltd. (2) 21,000,000 shares of Yuan Jie Investment Co., Ltd. (3) 21,320,000 shares of Yu Jie Investment Co., Ltd. A separate announcement will be made once the buyers and sale prices are finalized. 6. Countermeasures: Not applicable 7. Other matters to be stated (if the subject of the event or resolution is a public company or above, this material message also meets the criteria of items with a material impact on shareholders' equity or securities prices as stipulated in Subparagraph 9, Paragraph 1, Article 7 of the Securities and Exchange Act Enforcement Rules): None