Legal Opinion

Grandall Law Firm (Shenzhen)

Regarding

Chongqing Millison Technologies Co., Ltd.

2025 Private Placement of A-Shares

Legal Opinion

[Image: Grandall Law Firm Logo]

Address: 24DE, 31DE, 41-42F, Special Zone Press Tower, 6008 Shennan Avenue, Shenzhen, Guangdong Province 518034, China

Tel: (+86)(755) 8351 5666

Fax: (+86)(755) 8351 5333

Website: http://www.grandall.com.cn

Date: June 2026

Table of Contents

Definitions 2

Section 1 Statement Matters 7

Section 2 Main Text 9

1. Approval and Authorization of the Issuance 9

2. Issuer's Qualifications for the Issuance 10

3. Substantive Conditions for the Issuance 12

4. Establishment of the Issuer 15

5. Independence of the Issuer 16

6. Major Shareholders and Actual Controller of the Issuer 18

7. Share Capital and Its Evolution 19

8. Issuer's Business 19

9. Related Party Transactions and Horizontal Competition 20

10. Issuer's Major Assets 21

11. Issuer's Major Creditor Rights and Debts 24

12. Issuer's Major Asset Changes, Acquisitions, and Mergers 25

13. Formulation and Amendment of the Issuer's Articles of Association 25

14. Rules of Procedure and Standardized Operation of Shareholders' Meeting, Board of Directors, and Board of Supervisors 26

15. Issuer's Directors, Supervisors, Senior Management, and Their Changes 26

16. Issuer's Taxation 26

17. Issuer's Environmental Protection, Product Quality, and Technical Standards 27

18. Use of Proceeds by the Issuer 27

19. Issuer's Business Development Goals 28

20. Litigation, Arbitration, or Administrative Penalties 28

21. Evaluation of Legal Risks in the Issuer's Prospectus 29

22. Conclusion 30

Section 3 Signature Page 31

Definitions

Unless otherwise specified, the relevant terms in this legal opinion have the following specific meanings: