Letter to Shareholders containing weblink and path of Annual Report for FY 2025-26

DIAMOND POWER INFRASTRUCTURE LIMITED September 2, 2026 Corporate Relations Department Listing Department BSE Limited National Stock Exchange of India Limited 2nd Floor, P.J. Towers Exchange Plaza, Plot No. C/1, G- Block, Dalal Street, Bandra Kurla Complex, Bandra (E), Mumbai – 400 001 Mumbai – 400 051 Scrip Code: 522163 Scrip Symbol: DIACABS Sub: Letter to Shareholders – Web-link of Annual Report for FY 2025-26 pursuant to Regulations 30 and 36(1)(b) of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Dear Sir/Madam, Pursuant to Regulation 36(1)(b) and other applicable provisions of the Listing Regulations, the Company has sent a letter to those Members whose e-mail addresses are not registered with the Company/Depositories, providing the web-link, including the exact path, for accessing the Annual Report of the Company for the Financial Year 2025-26. A copy of the said letter is enclosed herewith for your reference. The above is for your information and record. Thanking you. Yours sincerely, For Diamond Power Infrastructure Limited Jayesh Patel Company Secretary and Compliance Officer ICSI Mem. No.: A14898 Encl: As above Regd. Office & Factory: Vadadala, Phase – II Savli, Vadodara, Gujarat, India-391520 CIN: L31300GJ1992PLC018198 Email: cs@dicabs.com, Website: www.dicabs.com Tel No.- 02667-251354/251516 Fax No.-02267-251202 4828_: Open PleaseTear Here Open PleaseTear Here अंतद(cid:337)शीय प(cid:361) काड(cid:330) INLAND LETTER CARD If undelivered please return to :- KFin Technologies Limited UNIT: Diamond Power Infrastructure Limited Selenium Building, Tower-B, Plot No 31 & 32, Financial District, Nanakramguda, Serilingampally, Hyderabad, Rangareddy, Telangana - 500 032, Toll Free No: 1800 309 4001 Email:einward.ris@kfintech.com DIAMOND POWER INFRASTRUCTURE LIMITED Registered Office: Vadadala, Phase – II, Savli, Vadodara, Gujarat, India-391520, CIN: L31300GJ1992PLC018198, Email: cs@dicabs.com | Website: www.dicabs.com Date: 02.09.2026 Folio No. / DP Id/ Client Id : Dear Shareholder, Subject: Web-link of the Annual Report for the Financial Year 2025-26 The 34th Annual General Meeting (AGM) of the Members of the Company will be held on Friday, September 25, 2026 at 3:30pm (IST), through Video Conference (VC) /Other Audio Visual Means (OAVM). The 34th Annual Report of the Company for the financial year ended 2025-26, is available on the website of the Company at https://dicabs.com/ and at the website of BSE Limited and National Stock Exchange of India Limited. Website link https://dicabs.com/investor/financial-reports/ Path https://dicabs.com/ > Investors > Financial Reports > Annual Report > 2025- Updating of E-mail ID, PAN and Bank Details: Shareholders are requested to update their PAN, KYC, email ID, mobile number, bank details and nomination details with their respective Depository Participant or RTA, KFintech Technologies Limited, at einward.ris@kfintech.com Demat holders should update their details with their respective Depository Participant. Senior citizens may contact the Senior Citizens Investor Cell at senior.citizen@kfintech.com or 1800 3094 006 for assistance. We request you submit KYC documents, if not done, to Kfintech Technologies Limited, the Registrar and Share Transfer Agent (RTA) of the Company at the address mentioned below, quoting your Folio Number. KFin Technologies Limited UNIT: Diamond Power Infrastructure Limited Selenium Building, Tower-B, Plot No 31 & 32, Financial District, Nanakramguda, Serilingampally, Hyderabad, Rangareddy, Telangana - 500 032, Toll Free No: 1800 309 4001 Email: einward.ris@kfintech.com For any queries or further assistance, please reach out to the RTA at einward.ris@kfintech.com. Thanking You For Diamond Power Infrastructure Limited Sd/- Jayesh Patel Company Secretary ICSI Mem.No:A14898