Announcement on the Completion of Registration of Change in Medical Device Business License by a Controlled Subsidiary

Securities code: 603858 Securities abbreviation: Buchang Pharmaceutical Announcement number: 2026-133

Shandong Buchang Pharmaceutical Co., Ltd.

Announcement on the completion of the registration change of the medical device business license of the controlled subsidiary. The company's board of directors and all directors guarantee that there are no false records, misleading statements or major omissions in this announcement, and assume legal responsibility for the authenticity, accuracy and completeness of its content.

Recently, Beijing Hepu Jingyuan Medical Technology Co., Ltd., a subsidiary of Shandong Buchang Pharmaceutical Co., Ltd., obtained the "Medical Device Business License" renewed by the Beijing Huairou District Market Supervision Administration. This time it mainly involves changes in residence, business premises and warehouse address. The specific contents after the change are as follows:

1. Related information about medical device business license

Registration information before change after change

Company name Beijing Hepu Jingyuan Medical Technology Co., Ltd. Beijing Hepu Jingyuan Medical Technology Co., Ltd. Business method Wholesale Wholesale

License No. Jingxing Pharmaceutical Regulatory Equipment Business License No. 20200059 Jingxing Pharmaceutical Regulatory Equipment Business License No. 20200059 Legal Representative Lu Jingming Lu Jingming

Person in charge of the company Lu Jingming Lu Jingming

Daxing, Zhongguancun Science and Technology Park, Daxing District, Beijing

No. 5, No. 48, Xingfu East Street, Beifang Town, Huairou District, Beijing No. 1, Yard No. 3, Tiangui Street, Biomedical Industry Base

Room 309 on the third floor of the building

Room 0102, 0103, 1st floor

Daxing, Zhongguancun Science and Technology Park, Daxing District, Beijing

No. 5, No. 48, Xingfu East Street, Beifang Town, Huairou District, Beijing No. 1, Yard No. 3, Tiangui Street, Biomedical Industry Base

Room 309 on the third floor of the building

Room 0102, 1st floor

2002 edition catalog: Category III: 6810,6815,682 2002 edition catalog: Category III: 6810,6815,6821, 1,6822 Medical optical apparatus, instruments and endoscopes 6822 Medical optical apparatus, instruments and endoscope equipment, 6823,6824,6825,6828,683 equipment, 6823,6824,6825,6828,6833,684 business scope

3,6845,6846,6854,6864,6865,686 5,6846,6854,6864,6865,6866,6877* 6,6877*** **

2017 edition catalog: Category III: 01,02,03,04,0 2017 edition catalog: Category III: 01,02,03,04,05,

5,06,07,08,09,10,13,14,21*** 06,07,08,09,10,13,14,21***

Daxing, Zhongguancun Science and Technology Park, Daxing District, Beijing No. 55, Shuangyu Road, Shijingshan District, Beijing (entrusted North warehouse address: No. 1, Yard No. 3, Tiangui Street, Biomedical Industry Base) Jingcheng'an Century Medical Equipment Co., Ltd. stores,

Room 0103, 1st floor (delivery)

Issuing authority Beijing Daxing District Market Supervision and Administration Bureau Beijing Huairou District Market Supervision and Administration Bureau

From June 28, 2025 From June 28, 2025

License term

To June 27, 2030 To June 27, 2030

2. Impact on listed companies

This change in the medical device business license is mainly based on the actual needs of the business situation and will have no obvious impact on subsequent production and operations.

Announcement is hereby made.

Board of Directors of Shandong Buchang Pharmaceutical Co., Ltd.

September 16, 2026