Announcement of Abnormal Stock Trading Fluctuations for Super Sound Electronics

Guangdong Goworld Co., Ltd.·June 28, 2026·3 pages

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Super Sound Electronics announces abnormal stock trading fluctuations due to a 20% price increase over three consecutive trading days. The company clarifies that it has no un-disclosed material information and addresses rumors regarding NVIDIA and high-speed copper-clad laminates, stating current products are not supplied to NVIDIA and high-speed products are in R&D.

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Guangdong Goworld Co., Ltd.

GUANGDONG GOWORLD CO.,LTD.

Securities Code: 000823

Securities Abbreviation: Super Sound Electronics

Announcement Number: 2026-050

Announcement of Abnormal Stock Trading Fluctuations for Guangdong Super Sound Electronics Co., Ltd.

The Company and all members of the Board of Directors guarantee the truthfulness, accuracy, and completeness of the information disclosed, and that there are no false records, misleading statements, or material omissions.

I. Stock Trading Abnormal Fluctuation Situation

The stock of Guangdong Super Sound Electronics Co., Ltd. (hereinafter referred to as "the Company" or "this Company") (Securities Abbreviation: Super Sound Electronics, Securities Code: 000823) experienced a cumulative deviation of over 20% in its closing price for three consecutive trading days on June 24, 2026, June 25, 2026, and June 26, 2026. According to the "Trading Rules of the Shenzhen Stock Exchange" and other relevant regulations, this constitutes a stock trading abnormal fluctuation.

II. Company's Attention and Verification Statement

As of now, the Company has no major undisclosed matters, and the information previously disclosed by the Company does not require any correction or supplementation.

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