Shenzhen SDMC Technology Co., Ltd. has formally launched its Hong Kong listing plan, setting the offer price at HK$32.80 per H share for a Global Offering of 19.21 million shares (nominal value: RMB1.00 each).

Offer Structure and Sizing • Total shares on offer: 19.21 million H shares, with an Offer Size Adjustment Option in place. • Hong Kong Public Offering: 1.92 million shares (10% of total, subject to reallocation). • International Offering: 17.29 million shares (90% of total, subject to reallocation and the Offer Size Adjustment Option). • Reallocation mechanism: Up to 0.96 million shares may be transferred from the International tranche to the Hong Kong tranche, raising the public offer to as much as 2.88 million shares (15% of the total) if demand warrants.

Pricing and Application Details • Offer price: HK$32.80 per H share, plus brokerage (1.0%), SFC levy (0.0027%), Stock Exchange trading fee (0.00565%) and AFRC levy (0.00015%). • Minimum application: 100 H shares. A standard board lot comprises 100 shares, implying a minimum cash outlay of HK$3,313.08. • Application period: 9:00 a.m. on 18 May 2026 to 12:00 noon on 21 May 2026 (Hong Kong time). • Application channels: exclusively electronic via HK eIPO White Form (for investors seeking physical certificates) or through the HKSCC EIPO channel (for CCASS settlement).

Listing Timetable • Pricing, allocation results and subscription levels: expected by 11:00 p.m. on 26 May 2026. • Share certificates for successful applicants: to be dispatched or deposited in CCASS on or before 26 May 2026. • Trading debut on HKEX Main Board: 9:00 a.m. on 27 May 2026 under stock code 00901; shares will trade in board lots of 100.

Settlement and Admission to CCASS Subject to final listing approval and satisfaction of customary conditions, SDMC Technology’s H shares will be admitted into CCASS for clearing and settlement on the first trading day. All transactions will settle on T+2 in accordance with CCASS procedures.

Board Composition The company’s board comprises four executive directors—Mr. Li Bo (Chairman), Mr. Yan Zhikang, Mr. Li Jun and Ms. Dang Hui—and three independent non-executive directors—Ms. Luk Pui Yin Grace, Mr. Yin Renyong and Dr. Zheng Qian.