Analysts/Institutional Investor Meet/Con. Call Updates

August 10, 2026 To, To, The Manager The Manager Listing Department Corporate Relationship Department National Stock Exchange of India Limited BSE Limited Exchange Plaza, Plot No. C/1, G Block Floor 25, Phiroze Jeejeebhoy Towers, Bandra Kurla Complex Dalal Street, Bandra (East), Mumbai - 400 001 Mumbai - 400 051 BSE Scrip Code - 544264 NSE Symbol: DIFFNKG SUB: COMPLIANCE UNDER REGULATION 30 OF THE SEBI (LISTING OBLIGATIONS AND DISCLOSURE REQUIREMENTS) REGULATIONS, 2015. Dear Sir/Madam, In compliance with Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that Diffusion Engineers Limited is organizing Earnings Conference Call to discuss the Company’s operational and financial performance for Q1 FY 2026-27 on Thursday, August 13, 2026 at 02:30 p.m. The invite is also available on the Company’s website https://diffusionengineers.com/investors-relation/ Kindly take the same on record. Thanking You, For Diffusion Engineers Limited Chanchal Jaiswal Company Secretary and Compliance Officer ICSI Membership No.: A67136 Diffusion Engineers Limited Cordially invites you to the Earnings Conference Call To discuss the operational and financial performance for Q1 FY27 Day/Date: Thursday, 13th August 2026 Time: 02:30 PM Access Numbers +91 22 6280 1102 Universal Dial in +91 22 7115 8003 Hong Kong 800 964 448 Singapore 800 101 2045 UK 0808 101 1573 USA 18667462133 Diamond Pass Link: https://services.choruscall.in/DiamondPassRegistration/register?co nfirmationNumber=0499057&linkSecurityString=4541291d3 Management Representatives: Mr. Prashant Garg (Chairman &Managing Director), Mr. Abhishek Mehta (Chief Financial Officer) and Ms. Chanchal Jaiswal (Company Secretary & Compliance Officer) We look forward to your participation RSVP: Mr. Rupesh Rege / Mr. Tejpal Singh Adfactors PR Contact: +91 95949 18891 / +91 93517 45014