CStone Pharmaceuticals — Earnings Release 2025

Jan 19, 2026

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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.

克礦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)

ANNOUNCEMENT ON THE MAJOR OPERATIONAL DATA FOR THE FOURTH QUARTER OF 2025

This is a voluntary announcement made by Yankuang Energy Group Company Limited* (the "Company").

According to the internal statistics compilation of the Company, the major operational data of the coal business and the coal chemicals business of the Company and its subsidiaries for the fourth quarter of 2025 is set out in the table below:

Unit: Ten kiloton

	For the fourth quarter of			For the first quarter to the fourth quarter of
	2025	2024	Increase / decrease (%)	2025	2024	Increase / decrease (%)
I. Coal Business
(i) Production volume of saleable coal	4,651	4,455	4.40	18,240	17,162	6.28
(ii) Sales volume of saleable coal	4,420	4,186	5.59	17,064	16,505	3.39
Among which: sales volume of self-produced coal	4,342	4,168	4.16	16,577	15,850	4.59
II. Coal Chemicals Business
1. Methanol
(i) Production volume	116.52	114.49	1.77	453.96	441.57	2.80
(ii) Sales volume	111.53	110.36	1.05	432.91	424.98	1.86
2. Glycol
(i) Production volume	8.79	11.59	-24.14	39.52	40.11	-1.46
(ii) Sales volume	8.41	10.75	-21.76	38.99	39.36	-0.94
3. Acetic acid
(i) Production volume	27.63	26.87	2.83	108.19	104.04	3.99
(ii) Sales volume	19.25	19.87	-3.13	76.62	74.30	3.13
4. Ethyl acetate
(i) Production volume	5.12	5.89	-13.04	23.79	28.46	-16.40

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	For the fourth quarter of			For the first quarter to the fourth quarter of
	2025	2024	Increase / decrease (%)	2025	2024	Increase / decrease (%)
(ii) Sales volume	5.03	6.00	-16.12	23.86	28.39	-15.96
5. Caprolactam
(i) Production volume	8.55	9.58	-10.78	35.70	33.66	6.08
(ii) Sales volume	9.12	10.04	-9.19	35.55	33.60	5.80
6. Polyformaldehyde
(i) Production volume	1.67	1.78	-5.93	7.06	6.50	8.60
(ii) Sales volume	2.02	1.76	14.94	7.06	6.49	8.73
7. Full distribution liquid paraffin®
(i) Production volume	10.77	11.61	-7.15	44.74	11.61	285.52
(ii) Sales volume	10.58	11.10	-4.73	44.64	11.10	302.03
8. Crude liquid wax ®
(i) Production volume	-	0.10	-	-	28.78	-
(ii) Sales volume	-	1.34	-	-	30.04	-
9. Naphtha ®
(i) Production volume	6.94	6.05	14.72	25.72	23.34	10.20
(ii) Sales volume	6.88	6.28	9.53	25.73	23.50	9.50
10. Urea				·
(i) Production volume	18.20	21.24	-14.32	91.02	71.57	27.17
(ii) Sales volume	17.68	20.44	-13.52	84.82	66.42	27.71

Notes:

• 1. In the third quarter of 2025, the Company consolidated the financial statements of Shandong Energy Group Northwest Mining Co., Ltd., constituting a business combination under common control. The Company has retrospectively adjusted relevant prior period data accordingly.
• 1. Sales volume of saleable coal refers to the total sales volume of self-produced coal and traded coal sold to the external market, excluding coal sold to internal chemical and power segments.
• 1. The year-on-year changes in the production and sales volumes of crude liquid wax, full-range liquid paraffin, and naphtha are primarily attributable to Shaanxi Future Energy Chemical Co., Ltd.'s proactive response to market fluctuations through flexible production and continuous optimization of its product mix, which impacted the production and sales volumes of its chemical products.
• 1. The production and sales volume set out in the table above were rounded, but the increase or decrease is calculated according to the original data before rounding.

As the operational data is influenced by various factors (including but not limited to the adjustment of the macroeconomic policy of the state, changes in domestic and overseas market conditions, seasonality, bad weather and disasters, equipment maintenance and safety inspection), the operational data for each quarter may differ substantially. The operational data may differ from the data disclosed in the periodical reports for the relevant period. The operational data disclosed in periodical reports shall prevail if there is any discrepancy. Investors should be aware of the investment risks associated therewith.

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Chairman of the Board

Zoucheng, Shandong Province, the PRC 19 January 2026

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