Diffusion Engineers Limited — Regulatory Filings 2025

Aug 14, 2025

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Date: August 14, 2025

To, To, The Manager The Manager Listing Department Corporate Relationship Department National Stock Exchange of India Limited BSE Limited Exchange Plaza, Bandra Kurla Complex Floor 25, Phiroze Jeejeebhoy Towers, Bandra (East), Dalal Street, Mumbai - 400 051 Mumbai - 400 001 NSE Symbol: DIFFNKG BSE Scrip Code - 544264

Dear Sir/Madam,

Sub‐: Submission of copy of Newspaper Advertisement published on August 14, 2025 pursuant to Regulation 47 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015

This is to inform you that the Board of Directors of the Company in its meeting held on Tuesday, August 12, 2025 has approved the Unaudited Financial Results (Standalone and Consolidated) of the Company for the quarter ended June 30, 2025. In this regard and pursuant to the provisions of Regulation 47 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we herein enclose the copy of the Newspaper Advertisement dated August 14, 2025 published in the following newspapers:

1. The Indian Express (English Newspaper)

2. Loksatta (Marathi Newspaper)

You are requested to take the above information on your records.

Thanking You. Yours faithfully, For Diffusion Engineers Limited

Chanchal Digitally signed by Chanchal Rajesh Rajesh Jaiswal Jaiswal Date: 2025.08.14 11:24:13 +05'30'

Chanchal Jaiswal Company Secretary and Compliance officer Membership no. A67136

Encl: A/a

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