Hong Kong – 16 June 2026 – China Biotech Services Holdings Limited (“China Biotech Services”) announced a supplemental agreement that increases the amount Jiabao Zhongzhi (Hainan) will invest in the registered capital of subsidiary Pengbo (Hainan) from RMB9.30 million to RMB9.45 million. The revised commitment represents approximately 5.93% of Pengbo (Hainan)’s enlarged registered capital upon completion of the 2026 Subscription.

The adjustment, agreed among Dynamic Healthcare, Jiabao Zhongzhi (Hainan) and Pengbo (Hainan), is intended to accommodate additional staff participants under Pengbo (Hainan)’s Share Award Scheme. All other terms of the original Tripartite Agreement dated 15 May 2026 remain unchanged.

Following completion, China Biotech Services will continue to hold its controlling 94.07% stake in Pengbo (Hainan) through its wholly owned subsidiaries, while Jiabao Zhongzhi (Hainan) retains the 5.93% minority interest. The transaction will be accounted for as an equity transaction with no gain or loss recognised in the group’s consolidated statement of profit or loss and other comprehensive income, and management expects no material financial impact.

Regulatory Review • Under Rule 19.32A(1) of the GEM Listing Rules, all applicable percentage ratios remain below 5%, classifying the deal as a non-notifiable transaction. • As Jiabao Zhongzhi (Hainan) director Mr. Li is a connected person at the subsidiary level, the subscription constitutes a connected transaction. However, it qualifies for reporting and announcement exemptions from circular, independent financial advice and independent shareholders’ approval requirements under Rule 20.99. • The board, including all independent non-executive directors, has confirmed that the transaction terms are fair, reasonable and in the interests of shareholders as a whole.

Corporate Governance No director holds any material interest in the supplemental agreement, and none were required to abstain from the board vote.

China Biotech Services, listed on GEM of the Hong Kong Stock Exchange (stock code: 08037), states that Pengbo (Hainan) will remain consolidated in the group accounts post-transaction.