Submission of copy of newspaper advertisement published on November 05, 2026 pursuant to Regulation 47 of SEBI (listing obligations and Disclosure Requirements) Regulations, 2015

Date: November 05, 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 Dear Sir/Madam, Sub‐: Submission of copy of Newspaper Advertisement published on November 05, 2026 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 Wednesday, November 04, 2026 has approved the Unaudited Financial Results (Standalone and Consolidated) of the Company for the quarter and half year ended September 30, 2026. 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 November 05, 2026 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 Jaiswal Company Secretary and Compliance officer Membership no. A67136 Encl: A/a 15 THURSDAY,NOVEMBER 5,2026 THEINDIAN EXPRESS DIFFUSI;N Innovative superconditioning solutions DIFFUSION ENGINEERS LTD. Q2 FY 27 Fi al Highlights ®in Million) Standalone Consolidated Particulars Q2FY27 Q2FY26 | YoYGrowth | Q2FY27 Q2FY26 | YoY Growth Revenue from Operations 1080.78 799.61 35.16% A 1259.34 835.66 50.70% A EBITDA (Excluding other income) 126.14 111.86 12.76% A 166.35 123.67 34.51% A Profit Before Tax (PBT) 167.35 122.03 37.14% A 152.20 126.52 20.30% A Profit After Tax (PAT) 152.38 99.13 53.72% A 127.53 101.65 25.46% A The above is an extract of the Unaudited Financial Results for the quarter and half year ended 30 September 2026, approved by the Board of Directors at its meeting held on 04 November 2026. The detailed financial results along with the Limited Review Report are available on the websites of BSE Limited, National Stock Exchange of India Limited, and the Company’s website www.diffusionengineers.com By order of the Board Diffusion Engineers Limited Date: 04/11/2026 Abhishek Mehta Place: Nagpur Chief Financial Officer Bl B e B e B Bl B o TE, & e 208 1 Q DIFFUSSIN Innovative superconditioning solutions DIFFUSION ENGINEERS LTD. Q2 FY in Million) Standalone Consolidated Particulars Q2Fy27 Q2FY26 | YoYGrowth | Q2Fv27 Q2FY26 | YoY Growth Revenue from Operations 1080.78 799.61 35.16% A 1259.34 835.66 50.70% A EBITDA (Excluding other income) 126.14 11186 12.76% A 166.35 123.67 34.51% & Profit Before Tax (PBT) 167.35 122.03 37.14% A 152.20 126.52 20.30% A Profit After Tax (PAT) 152.38 99.13 53.72% A 127.53 101.65 25.46% A The above is an extract of the Unaudited Financial Results for the quarter and half year ended 30 September 2026, approved by the Board of Directors at its meeting held on 04 November 2026. The detailed financial results along with the Limited Review Report are available on the websites of BSE Limited, National Stock Exchange of India Limited, and the Company’s website www.diffusionengineers.com. By order of the Board Diffusion Engineers Limited Abhishek Mehta Date: 04/11/2026 Place: Nagpur Chief Financial Officer Adfactors 515/26