Important Notice on Early Redemption and Upcoming Trading Suspension of Ultrasonic Convertible Bonds

Important Notice on Early Redemption and Upcoming Trading Suspension of Ultrasonic Convertible Bonds

Guangdong Shantou Ultrasonic Electronics Co., Ltd. and all members of the board of directors guarantee that the content of this announcement is true, accurate, and complete, with no false records, misleading statements, or significant omissions.

Important Content Reminder:

1. Last Trading Day: June 9, 2026
   June 9, 2026, is the last trading day for the "Ultrasonic Convertible Bonds," which will be referred to as "Z Sound Convertible Bonds" on that day. Trading will cease after the market closes on June 9, 2026.

2. Last Conversion Day: June 12, 2026
   June 12, 2026, is the last conversion day for the "Ultrasonic Convertible Bonds." Investors holding the bonds can still convert them before the market closes on that day. After the market closes on June 12, 2026, unconverted "Ultrasonic Convertible Bonds" will stop being convertible.

3. As of the market close on June 5, 2026, there are only 2 trading days left until the "Ultrasonic Convertible Bonds" stop trading and 5 trading days until they stop being convertible. The company reminds investors to read this announcement carefully, pay attention to related risks, and trade the "Ultrasonic Convertible Bonds" cautiously.

Special Reminders:

1. Redemption Date for Convertible Bonds: June 15, 2026

2. Redemption Price for Convertible Bonds: 101.04 CNY per bond (including interest and tax)

3. Redemption Funds Arrival Date: June 23, 2026

4. Trading Suspension Date for Convertible Bonds: June 10, 2026

5. Conversion Suspension Date for Convertible Bonds: June 15, 2026

6. Conditions for Redemption Satisfaction Date: May 22, 2026

7. Redemption Registration Date for Convertible Bonds: June 12, 2026

8. Issuer's Redemption Funds Arrival Date (to China Clearing Account): June 18, 2026

9. Redemption Type: Full redemption

10. Last Trading Day for Convertible Bonds: Z Sound Convertible Bonds

11. According to the arrangement, any "Ultrasonic Convertible Bonds" that remain unconverted after the market closes on June 12, 2026, will be forcibly redeemed. After this redemption is completed, the "Ultrasonic Convertible Bonds" will be delisted from the Shenzhen Stock Exchange. Bondholders are reminded to convert their bonds within the deadline. If any "Ultrasonic Convertible Bonds" held by bondholders are pledged or frozen, it is recommended to lift the pledge or freeze before the conversion suspension date to avoid being redeemed due to inability to convert.

12. Risk Reminder: The redemption price for the "Ultrasonic Convertible Bonds" may differ significantly from the market price before trading and conversion suspension. Bondholders are reminded to convert their bonds within the deadline. Investors who fail to convert in time may face losses, and investors are advised to pay attention to investment risks.

Guangdong Shantou Ultrasonic Electronics Co., Ltd. (hereinafter referred to as "the Company") held the 19th meeting of the 10th Board of Directors on May 22, 2026, and approved the proposal for the early redemption of the "Ultrasonic Convertible Bonds." Considering the current market and the company's situation, the board of directors has decided to exercise the early redemption rights of the "Ultrasonic Convertible Bonds" and authorized the company's management and relevant departments to handle all related matters for the subsequent redemption of the "Ultrasonic Convertible Bonds." The relevant matters are announced as follows:

Basic Information on Convertible Bonds

1. Issuance of Convertible Bonds
   Approved by the China Securities Regulatory Commission with document number "Zheng Jian Xu Ke [2020] 2781," the company publicly issued 7 million convertible bonds on December 8, 2020, with a face value of 100 CNY each, totaling 700 million CNY, with a term of 6 years.

2. Listing of Convertible Bonds
   Approved by the Shenzhen Stock Exchange with document number "Shen Zheng Shang [2021] 18," the company's 700 million CNY convertible bonds have been listed for trading on the Shenzhen Stock Exchange since January 14, 2021, under the name "Ultrasonic Convertible Bonds" and bond code "127026."