Supplemental information related to the unsecured corporate bond issuance approved by the Board of Directors on April 14, 2021

1. Date of the board of directors resolution: NA
2. Name [issue no.__ of (secured, unsecured) corporate bonds of ___________ (company)]: Second unsecured corporate bond issue in 2021 of Taiwan High Speed Rail Corp.
3. Total amount issued: Total amount is NT$ 1 billion.
4. Face value per bond: NT$ 10 million.
5. Issue price: At par value.
6. Issuance period: 3 years.
7. Coupon rate: Fixed coupon rate 0.30%.
8. Types, names, monetary values and stipulations of collaterals: NA.
9. Use of the funds raised by the offering and utilization plan: Proceeds will be used in the green investment plan and social benefit investment plan. 
10. Underwriting method: Public offering.
11. Trustees of the corporate bonds: Hua Nan Commercial Bank, Ltd.
12. Underwriter or agent: MasterLink Securities Co. Ltd. as a lead underwriter.
13. Guarantor(s) for the issuance: NA.
14. Agent for payment of the principal and interest: Hua Nan Commercial Bank, Ltd., Business Department.
15. Certifying institution: NA.
16. Where convertible into shares, the rules for conversion: NA.
17. Sell-back conditions: NA.
18. Buyback conditions: NA.
19. Reference date for any additional share exchange, stock swap, or subscription: NA.
20. Possible dilution of equity in case of any additional share exchange,stock swap, or subscription: NA.
21. Any other matters that need to be specified: None.