Certificate under SEBI (Depositories and Participants) Regulations, 2018

REF: CHEMFAB/SEC/2026-27 07th July, 2026 BSE Limited National Stock Exchange of India Limited Corporate Relationship Department The Manager, Listing Department Phiroze Jeejeebhoy Towers, “Exchange Plaza" Dalal Street, Bandra - Kurla Complex, Bandra (E) Mumbai- 400 001 Mumbai -400 051 BSE -Scrip Code: 541269 NSE Symbol: CHEMFAB Dear Sir/Madam, Sub: Certificate pursuant to Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018. We enclose herewith certificate Issued by Cameo Corporate Services Limited, Registrar and Share Transfer Agent of the Company confirming the compliance under the Regulation 74(5) of the Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 for the quarter ended 30th June, 2026. Kindly take the above on record. Thanking You, Yours faithfully, For CHEMFAB ALKALIS LIMITED Bharatraj Panchal Company Secretary FCS: 9828 ENCL:A/a CAMEO CAMEO CORPORATE SERVICES LIMITED Ref: CAM/CHEMFAB/REG 74(5)/2026. 01.07.2026 The Company Secretary Chemfab Alkalis Limited Team House, G S T Salai, Vandalur Chennai - 600048. Dear Sir/Mam, Subject: Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 for the quarter ended 30.06.2026. With reference to the above captioned subject, we hereby confirm that the securities received from the depository participants for dematerialisation during the quarter ended 30th June, 2026 were confirmed (accepted/rejected) to the depositories by us and that securities comprised In the said certificates have been listed on the stock exchanges where the earlier Issued securities are listed. We hereby also confirm that the security certificates received for dematerialisation have been mutilated and cancelled after due verification by the depository participant and the name of the depositories have been substituted in register of members as the registered owner within stipulated time limit under captioned regulations. Thanking you Yours faithfully For Cameo Corporate Services Limited. Q) \1\‘;:10,‘9\7 - Assistant Manager (Shares) ‘Subramanian Building', No.1, Club House Road, Chennai-600 002. Phone: 28460390 (5 lines),40020700, E-mail:investor@cameoindia.com Website: www.cameoindia.com CIN: U67120TN1998PLC041613.