China High Speed Transmission Equipment Group Co., Ltd.HKEX: 658

Letter to Registered Shareholders - Notice of Publication of Interim Report 2026 and Reply Form

· Issued by China High Speed Transmission Equipment Group Co., Ltd. via HKEXnews

Filed with HKEX · Stock code 658 · · 2 pages · English and Chinese

The Current Corporate Communication of the Company has been published in English and Chinese languages and are available on the website of The Stock Exchange of Hong Kong Limited (“HKEXnews”) at www.hkexnews.hk and the Company’s website at www.chste.com. If you have selected to receive the Company’s Corporate Communications in printed version, enclosed is the Current Corporate Communication of the

China High Speed Transmission Equipment Group Co., Ltd. on 6ix

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