Pre- Intimation of Investors & Analysts meet and Plant visit scheduled on August 27, 2026

Date: 21st August, 2026 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 SUB: Regulation 30(6) of SEBI (LODR) Regulations, 2015 – Pre- Intimation of Investors & Analysts meet and Plant visit Dear Sir/ Madam, Pursuant to Regulation 30(6) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“the Listing Regulations”) read with Part A of Schedule III of the Listing Regulations, we wish to inform that the management of the Company will have a meeting and Plant visit with Investors & Analysts on Thursday, 27th August, 2026. Note: Any unforeseen exigency on the part of Company / Investors / Analysts may lead to change in date /time and no UPSI will be shared during the said visit. The Discussion with the investor is based on generally available information and not related to any Unpublished Price Sensitive Information as per Diffusion Engineers Limited-Code of Practices and Procedures for Fair Disclosure of Unpublished Price Sensitive Information. Kindly take the same on record. Thanking you, For Diffusion Engineers Limited Chanchal Jaiswal Company Secretary and Compliance Officer Membership no. A67136 For more details please visit: https://diffusionengineers.com/