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BSE — Scrip Code: 541269 CONL CHEMFAB ALKALIS LIMITED 08" October 2026 National Stock Exchange of India Limited The Manager, Listing Department “Exchange Plaza” Bandra - Kurla Complex, Bandra (E) Mumbai - 400 051 NSE Symbol: CHEMFAB Sub: Intimation of Credit Rating under Regulation 30 of the SEBI (Listing Regulations and Disclosure Requirements) Regulations, 2015.

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Pursuant to Regulation 30 of the SEBI (Listing Regulations and Disclosure Requirements) Regulations, 2015, we wish to inform you that “India Ratings and Research” has affirmed the following rating in respect of the Company’s bank loan facilities’.

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Instrument Regulator Date of Coupon Maturity Size of Rating Assigned Rating Type of Issuance Rate Date Issue with Action Instrument (INR Outlook/Watch million) Bank loan RBI - - - 1700 IND Affirmed facilities BBB+/Negative/IND A2 We are also enclosing the credit rating letter issued by India Ratings and Research (Ind-Ra).

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IndiaRatings CR India Ratings Affirms Chemfab Alkalis' Bank Loan facilities at ‘IND BBB+'/Negative Oct 07, 2026 | CHEMFAB ALKALIS LIMITED | Commodity Chemicals India Ratings and Research (Ind-Ra) has affirmed Chemfab Alkalis Limited’s (CAL) bank loan facilities’ rating as follows: Details of Instruments Si f Instrument Regulator of Date of Coupon Maturity Isslliee(TNR Rating Assigned with Rating Type Instrument Issuance Rate Date .

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Outlook/Watch Action million) IND Bank loan - RBI - - - 1700 BBB+/Negative/IND | Affirmed facilities A2 Analytical Approach Ind-Ra continues to take a fully consolidated view of CAL and its two wholly owned subsidiaries, Chemfab Karaiikal Limited (CKL), and Chemfab Hiitech Piping Limited (CHPL), to arrive at the ratings in view of the strong operational and strategic linkages between them.

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