CStone Pharmaceuticals — Earnings Release 2025

Aug 13, 2025

Hong Kong Exchanges and Clearing Limited and The Stock Exchange of Hong Kong Limited take no responsibility for the contents of this announcement, make no representation as to its accuracy or completeness and expressly disclaim any liability whatsoever for any loss howsoever arising from or in reliance upon the whole or any part of the contents of this announcement.

兖磷能源集團股份有限公司

YANKUANG ENERGY GROUP COMPANY LIMITED*

(A joint stock limited company incorporated in the People's Republic of China with limited liability)

(Stock Code: 01171)

INSIDE INFORMATION

PROFIT ALERT ANNOUNCEMENT FOR THE FIRST HALF OF 2025

This announcement is made by Yankuang Energy Group Company Limited* (the "Company") pursuant to Part XIVA of the Securities and Futures Ordinance and the disclosure requirement under Rule 13.09(2)(a) and 13.10B of the Rules Governing the Listing of Securities on The Stock Exchange of Hong Kong Limited.

I. ESTIMATED RESULTS OF THE PERIOD (BASED ON THE CHINA ACCOUNTING STANDARDS)

(1) Period of estimated results

1 January 2025 to 30 June 2025.

(2) Estimated results

1. Based on preliminary estimates by the finance department of the Company, the Company estimates to record a net profit attributable to shareholders of the listed company of approximately RMB4.65 billion in the first half of 2025, representing a decrease of around RMB2.9 billion or around 38% year-on-year as compared with the corresponding period of the previous year (statutorily disclosed data);

2. Based on preliminary estimates by the finance department of the Company, the Company estimates to record a net profit attributable to shareholders of the listed company after deducting non-recurring profit or loss of approximately RMB4.4 billion in the first half of 2025, representing a decrease of around RMB2.9 billion or around 39% year-on-year as compared with the corresponding period of the previous year (statutorily disclosed data).

(3) The data of estimated results of the period have not been audited by certified public accountants.

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II. RESULTS FOR THE CORRESPONDING PERIOD OF THE PREVIOUS YEAR (BASED ON CHINA ACCOUNTING STANDARDS)

(1) Net profit attributable to shareholders of the listed company: RMB7.6 billion.

(2) Net profit attributable to shareholders of the listed company after deducting non-recurring profit or loss: RMB7.3 billion.

(3) In the second half of 2024, the Company completed the distribution of stock dividends for 2023. In accordance with the China Accounting Standards, the basic earnings per share for the corresponding period of the previous year shall be adjusted retrospectively. Earnings per share after retrospective adjustments: RMB 0.79 per share.

III. MAJOR REASONS FOR THE ESTIMATED RESULTS OF THE PERIOD

During the reporting period, the Company optimised its production organization to expand capacity and increase production. The capacity of main products was efficiently released, and the efforts of exploring potentials to increase efficiency was precisely executed, thus resulting in a good performance in cost control, achieving better synergy and profitability within the chemicals business, as well as partially hedging the impact of the periodic downward movement of coal prices. However, due to the surplus balance of coal supply and demand in general, coal prices witnessed a significant decline as compared to the corresponding period, thus leading to a year-on-year decline in net profit attributable to the parent company.

In the second half of the year, the Company will proactively respond to market changes, scientifically and reasonably optimise its production organization and firmly release advantageous production capability. Also, the Company will comprehensively strengthen its cost management and maximise its potential to reduce costs and increase efficiency, while expanding value-added channels for sales and continuing to cultivate values and create potentials, so as to bring good values and returns for investors.

IV. RISK WARNING

The Company does not have any significant uncertainties that will affect the accuracy of contents of the estimated results.

V. OTHER INFORMATION

The estimated data above is based on preliminary accounting information only. Specific and accurate financial data will be disclosed in the 2025 interim report to be officially published by the Company. Investors are advised to pay attention to the investment risks.

The Company completed the acquisition of 51% equity interest in Shandong Energy Group Xibei Mining Co., Ltd.* (山東能源集團西北礦業有限公司) (“Xibei Mining”) on 11 July 2025, and has included the financial statements of Xibei Mining in the financial statements of the Company as consolidated elements since July 2025. In accordance with the China Accounting Standards, the aforementioned transaction constitutes a business combination under common control. The Company will retrospectively adjust the relevant financial data in its third quarterly report for 2025 and

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consolidate the financial data of Xibei Mining in each of the previous years and from January 2025 onwards.

Shareholders and potential investors of the Company are advised to exercise caution when dealing in shares.

By order of the Board
Yankuang Energy Group Company Limited*
Li Wei
Chairman of the Board

Zoucheng, Shandong Province, the PRC
13 August 2025

As at the date of this announcement, the Directors of the Company are Mr. Li Wei, Mr. Wang Jiuhong, Mr. Liu Jian, Mr. Liu Qiang, Mr. Zhang Haijun, Mr. Su Li and Mr. Huang Xiaolong, and the independent non-executive Directors of the Company are Mr. Zhu Limin, Mr. Gao Jingxiang, Mr. Woo Kar Tung, Raymond and Ms. Zhu Rui.

• For identification purpose only