/Announcement on the estimated guarantee amount for subsidiaries
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Announcement on the estimated guarantee amount for subsidiaries

Shanghai Stock Exchange
2026/04/24

Securities code: 603235 Securities abbreviation: Tianxin Pharmaceutical Announcement number: 2026-010

Jiangxi Tianxin Pharmaceutical Co., Ltd.

The company's board of directors and all directors guarantee that the contents of this announcement do not contain any false records, misleading statements or major omissions, and assume legal responsibility for the authenticity, accuracy and completeness of its contents.

Important content reminder:

 Name of the guaranteed party: Subsidiaries within the scope of the consolidated statements of Jiangxi Tianxin Pharmaceutical Co., Ltd. (hereinafter referred to as the "Company"), including but not limited to Leping Tianxin Thermal Power Co., Ltd. (hereinafter referred to as "Tianxin Thermal Power"), Ningxia Tianxin Pharmaceutical Co., Ltd. (hereinafter referred to as "Ningxia Tianxin"), Qingtongxia Tianxin Dingheng Thermal Power Co., Ltd. (hereinafter referred to as "Qingtongxia Thermal Power").

 Whether it is a related person of a listed company: No

 The amount of this guarantee and the balance of the guarantee actually provided to it: The company plans to provide guarantees for subsidiaries within the scope of the consolidated statements. The estimated guarantee amount is RMB 700 million, of which the guarantee amount for subsidiaries with an asset-liability ratio below 70% shall not exceed RMB 100 million, and the guarantee amount for subsidiaries with an asset-liability ratio of over 70% shall not exceed RMB 600 million. As of the disclosure date of this announcement, the company has actually provided a guarantee balance of RMB 383.2048 million for subsidiaries within the scope of the consolidated statements.  Is there any counter-guarantee this time: None.

 Cumulative amount of overdue external guarantees: None.

 Special risk warning: As of December 31, 2025, the asset-liability ratio of Qingtongxia Thermal and Ningxia Xinxin exceeds 70%. Investors are advised to pay attention to related risks.

1. Overview of guarantee situation

(1) Basic information about this guarantee

In order to meet the needs of the company's subsidiaries for production, operation and project construction funds, improve financing efficiency and reduce financing costs, the company plans to provide a total guarantee limit of no more than 700 million yuan for subsidiaries within the scope of the consolidated statements (including established subsidiaries and subsidiaries with control obtained through new establishment, acquisition, etc.) in the future, of which the guarantee limit for subsidiaries with an asset-liability ratio of less than 70% will not exceed 100 million yuan, and the guarantee limit for subsidiaries with an asset-liability ratio of above 70% will not exceed 600 million yuan. The actual guarantee amount shall be subject to the final signed and executed guarantee contract or approval from banks, financial leasing companies, guarantee companies and other financial institutions. Within the above-mentioned limit range, the company can adjust the guarantee line for each of its subsidiaries, but subsidiaries with an asset-liability ratio of more than 70% when the adjustment occurs can only obtain guarantee lines from subsidiaries with an asset-liability ratio of more than 70% when the shareholders' meeting considers this matter.

The validity period of the above guarantee amount is from the date of review and approval by the company's 2025 annual shareholders' meeting to the date of the 2026 annual shareholders' meeting. The specific guarantee period shall be subject to the guarantee agreement signed at the time of actual occurrence.

(2) Internal decision-making process for the performance of this guarantee

On April 23, 2026, the 14th meeting of the company's third board of directors reviewed and approved the "Proposal on Estimating the Amount of Guarantee for Subsidiaries". This proposal still needs to be submitted to the company's 2025 annual shareholders' meeting for review. At the same time, the shareholders' meeting is submitted for approval. The company's board of directors authorizes the operating management to handle external guarantee matters within the scope of the total amount of guarantees based on actual operating conditions.

(3) Basic information on guarantee estimates

Guaranteed Guarantee Amount

The guarantor party’s most recent share of listed companies as of the date of the Company’s

Is this new addition guaranteed? Shareholding ratio. Date of disclosure of the first-phase capital report. The company’s most recent

Secured party Guarantee amount Guarantee expected validity period Relevance Counterparty Example Assets and liabilities Guarantee balance Net assets for the period

(10,000 yuan) Guarantee Guarantee (%) Rate (10,000 yuan) Ratio

(%) (%)

1. Guarantee estimates for subsidiaries

  1. A holding subsidiary with an asset-liability ratio of more than 70%

Shares of the Year from 2025

Company Qingtongxia Thermal 99.94 78.97 17,250.86 30,000.00 6.10 No No The date of review and approval by the Eastern Conference

From year to year 2026

Company Ningxia Xinxin 100.00 94.84 21,069.62 30,000.00 6.10 No No

Until the date of the shareholders’ meeting

  1. Holding subsidiaries with an asset-liability ratio of less than 70%

Shares of the Year from 2025

The date of review and approval by the Eastern Conference

Company Tianxin Thermal Power 100.00 14.99 0.00 10,000.00 2.03 No No Until 2026

Until the date of the shareholders’ meeting

2. Basic information of the guaranteed person

(1) Basic information of the guaranteed object

  1. Tianxin Thermal Power

Company name: Leping Tianxin Thermal Power Co., Ltd.

Unified social credit code: 91360281693721715F

Date of establishment: September 4, 2009

Registered address: Industrial Park, Leping City, Jiangxi Province (Tashan)

Legal representative: Yu Xiaobing

Registered capital: RMB 18 million

Equity structure: The company holds 100% of the shares

Business scope: Licensed projects: power generation business, power transmission business, power supply (distribution) business (projects that are subject to approval according to law can only carry out business activities within the validity period of the license after being approved by the relevant departments. The specific business projects and license period are subject to the approval documents or licenses of the relevant departments) General projects: thermal production and supply, sales of non-metallic minerals and products, sales of coal and products (except for projects that are subject to approval according to law, business activities can be carried out independently with a business license in accordance with the law)

  1. Ningxia Xin

Company Name: Ningxia Xinxin Pharmaceutical Co., Ltd.

Unified social credit code: 91640381MA7LF90R6R

Date of establishment: March 15, 2022

Registered address: No. 19, Hanba East Street, Xiaoba Town, Qingtongxia City, Wuzhong City, Ningxia Hui Autonomous Region

Legal representative: Li Quanguo

Registered capital: RMB 180 million

Equity structure: The company holds 100% of the shares

Business scope: pharmaceutical production; pharmaceutical wholesale; feed additive production; food additive production (items subject to approval according to law, business activities can only be carried out after approval by relevant departments) General projects: feed additive sales; food additive sales; chemical product production (excluding licensed chemical products) products); chemical product sales (excluding licensed chemical products); biochemical product technology research and development; bio-based material manufacturing; bio-based material sales; new material technology promotion services; new material technology research and development (except for licensed businesses, projects that are not prohibited or restricted by laws and regulations can be independently operated in accordance with the law).

  1. Qingtongxia thermal power

Company name: Qingtongxia Tianxinding Heng Thermal Co., Ltd.

Unified social credit code: 91640381MA7JARH38H

Date of establishment: March 16, 2022

Registered address: No. 19, Hanba East Street, Xiaoba Town, Qingtongxia City, Wuzhong City, Ningxia Hui Autonomous Region

Legal representative: Li Quanguo

Registered capital: RMB 86 million

Equity structure: The company holds 99.88% of the equity of Qingtongxia Thermal Power through its wholly-owned subsidiary Ningxia Xiaxin, and indirectly holds 0.06% of the equity of Qingtongxia Thermal Power through Qingtongxia Dingheng Thermal Power Co., Ltd., a joint-stock company of Ningxia Tianxin. The company holds a total of 99.94% of the equity of Qingtongxia Thermal Power.

Business scope: power supply business; power generation business, power transmission business, power supply (distribution) business (projects subject to approval according to law can only be carried out with the approval of relevant departments) General projects: heat production and supply; renewable resource processing; renewable resource recycling (except productive scrap metal); renewable resource sales; lime and gypsum manufacturing; lime and gypsum sales (except for licensed businesses, projects that are not prohibited or restricted by laws and regulations can be independently operated in accordance with the law)

(2) Main financial indicators of the guaranteed object

  1. Tianxin Thermal Power

Unit: Ten thousand yuan December 31, 2024 December 31, 2025 Project

(Audited) (Audited)

Total assets 21,455.10 21,942.32Total liabilities 6,258.20 3,289.69Net assets 15,196.90 18,652.63Asset-liability ratio 29.17% 14.99% 2024 2025

Project

(Audited) (Audited)

Operating income 18,371.85 17,388.97 Net profit 2,855.17 3,455.73

  1. Ningxia Xin

Unit: Ten thousand yuan December 31, 2024 December 31, 2025 Project

(Audited) (Audited)

Total assets 94,655.22 160,307.71 Total liabilities 80,218.47 152,027.85

Net assets 14,436.75 8,279.87 Asset-liability ratio 84.75% 94.84% 2024 2025

Project

(Audited) (Audited)

Operating income 18.35 7,203.82

Net profit -2,211.19 -6,156.88

  1. Qingtongxia thermal power

Unit: Ten thousand yuan December 31, 2024 December 31, 2025 Project

(Audited) (Audited)

Total assets 31,400.18 37,561.28 Total liabilities 23,061.78 29,663.67

Net assets 8,338.40 7,897.61 Asset-liability ratio 73.44% 78.97% 2024 2025

Project

(Audited) (Audited)

Operating income - -

Net profit -221.91 -440.79

3. Main contents of the guarantee agreement

The company has not yet signed a relevant agreement regarding the expected guarantee, including the guarantee method, guarantee amount and guarantee period.

Terms such as these shall be determined through mutual negotiation between the company and the contract object within the above guarantee amount, and shall be confirmed in a formally signed guarantee document.

The company will perform its information disclosure obligations in a timely manner based on the signing and implementation of the guarantee agreement.

4. Necessity and Reasonability of Guarantee

This guarantee is to meet the operational and development needs of each subsidiary and is conducive to improving the company's overall financial stability.

capital efficiency and in line with the overall interests of the company. The guaranteed objects this time are all wholly-owned and controlled subsidiaries of the company.

The company has sufficient control over it and can effectively monitor and manage its operations, and the overall risks are controllable.

5. Opinions of the Board of Directors

The board of directors believes that this guarantee is to meet the operational and development needs of each subsidiary and is in line with the company's overall interests and business strategy. The guaranteed objects this time are all the company's wholly-owned or controlled subsidiaries. The company has a complete corporate governance structure and internal control evaluation system, and can implement effective business, fund management and risk control for the subsidiaries to ensure the company's fund security. This guarantee will not affect the company's ability to continue operating and will not harm the interests of the company and shareholders. Therefore, I agree to this guarantee.

6. Cumulative number of external guarantees and number of overdue guarantees

The company's external guarantees are all guarantees provided by the company to its wholly-owned or controlled subsidiaries. As of the disclosure date of this announcement, the total amount of guarantees provided by the company and its subsidiaries to the outside world is 1.25 billion yuan (including this time), accounting for 25.43% of the company's audited net assets in 2025; the cumulative balance of guarantees provided by the company and its subsidiaries to the outside world is 383.2048 million yuan, accounting for 7.79% of the company's audited net assets in 2025. The company has not provided guarantees for its controlling shareholders, actual controllers and their related parties, nor has there been any overdue guarantee.

Announcement is hereby made.

Board of Directors of Jiangxi Tianxin Pharmaceutical Co., Ltd.

April 24, 2026