Tianyin Mechanical and Electrical: Controlling shareholder reduced 3.623 million shares.

Tianyin Electromechanical Announcement: The company's controlling shareholder, Lanhai Ruixing, reduced its shareholding in the company by a total of 3.623 million shares through centralized bidding and block trading on December 15, 2025, accounting for 0.85% of the total share capital of the company. This reduction has resulted in Lanhai Ruixing and its concerted action person, Nanhai Industrial Group, decreasing their combined shareholding from 26.8% to 25.95%. This reduction plan was within the scope previously disclosed and did not result in a change of the company's controlling shareholder or actual controller, and does not affect the company's governance structure and ongoing operations.