Announcement on the Implementation of Other Risk Warnings and Suspension/Resumption of Trading of Company Shares

Securities Code: 300290 Securities Abbreviation: Rongke Technology Announcement No.: 2026-031

Announcement on the Implementation of Other Risk Warnings and Suspension/Resumption of Trading of Company Shares

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

Special Reminder:

1. Rongke Technology Co., Ltd. (hereinafter referred to as the "Company") shares will be suspended from trading for one day starting from the opening of trading on June 29, 2026 (Monday) and will resume trading starting from the opening of trading on June 30, 2026 (Tuesday).

2. Starting from the opening of trading on June 30, 2026 (Tuesday), the Company's shares will be subject to other risk warnings. The stock abbreviation will be changed from "Rongke Technology" to "ST Rongke"; the stock code remains unchanged, still "300290"; the daily price fluctuation limit remains unchanged, still 20%.

I. Stock Type, Abbreviation, Securities Code, and Start Date of Other Risk Warnings

1. Stock Type: RMB Ordinary Share Class A

2. Stock Abbreviation: Changed from "Rongke Technology" to "ST Rongke"

3. Securities Code: Unchanged, still "300290"

4. Start Date of Other Risk Warnings: June 30, 2026

5. Start Date of Company Share Suspension and Resumption: The Company's shares will be suspended from trading for one day starting from the opening of trading on June 29, 2026 (Monday) and will resume trading starting from the opening of trading on June 30, 2026 (Tuesday).

6. Price Fluctuation Limit: After the Company's shares are subject to other risk warnings, the daily price fluctuation limit remains unchanged, still 20%.

II. Reasons for the Company's Shares Being Subject to Other Risk Warnings

According to Article 9.4, Item (V) and Article 9.5 of the "Shenzhen Stock Exchange ChiNext Stock Listing Rules (2026 Revision)", if "funds are provided to the controlling shareholder (or the largest shareholder if there is no controlling shareholder) or its related parties, or guarantees are provided to external parties in violation of procedures, and the circumstances are serious" or "(II) the listed company violates procedures to provide external guarantees", and the amount of the guarantee (excluding guarantees for subsidiaries within the scope of the consolidated financial statements of the listed company) is over RMB 10 million, or accounts for more than 5% of the net assets audited in the most recent period, and "there are no feasible solutions or although solutions are proposed, they cannot be resolved within one month", the Company's shares will be subject to other risk warnings.

On May 29, 2026, the Company issued the "Notice of Warning Regarding Company Shares Potentially Being Subject to Other Risk Warnings Due to Non-compliant Guarantees by the Company" (Announcement No.: 2026-024). Due to a lawsuit involving a non-compliant guarantee of approximately RMB 136 million by the former controlling shareholder, which could not be resolved before June 29, 2026, the Company's shares will be subject to other risk warnings starting from June 30, 2026.

III. Board of