Submission of Revised notice of AGM which forms part of Annual Report for FY 2025-26 due typographical error in the serial numbers of Special Business as set out in the notice of AGM.

REF: CHEMFAB/SEC/2026-2027 18th August 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 Sub: Corrigendum to the Notice of 17th Annual General Meeting (AGM) and Annual Report for Financial Year 2025-26 Sir/Mam, This is with reference to the captioned subject and in continuation of the Company’s letter dated 17th August 2026, whereby the Company submitted its Annual Report for the financial year 2025– 26 and the Notice convening the 17th Annual General Meeting (“AGM”) scheduled to be held on Wednesday, 9th September 2026, at 10:00 A.M. (IST) through Video Conferencing/Other Audio- Visual Means. Subsequently, certain typographical errors were identified in the serial numbering of the agenda items under special business set out in the notice of 17th AGM which was inadvertently numbered as “4. Ratification of Cost Auditor's Remuneration” and ”5. Payment of Commission to Non- Executive Directors of the Company” instead of 5 and 6. Accordingly, the serial numbers of the agenda items under Special Business and its explanatory statement as set out in the Notice of 17th AGM be and is hereby amended and substituted as below: 5. Ratification of Cost Auditor's Remuneration. 6. Payment of Commission to Non-Executive Directors of the Company. The revised copy of Annual Report FY 2025-26 which also includes revised Notice of AGM is hereby enclosed and also can be accessed in the website of the company at https://chemfabalkalis.com/wp-content/uploads/2026/08/Chemfab_Alkalis_Limited_AR26F.pdf Kindly take above information on records. Thanking You, Yours Faithfully, For CHEMFAB ALKALIS LIMITED Bharatraj Panchal Company Secretary F9828 CHEMFAB ALKALIS LIMITED Annual Report 2025-26 Essential to Industry Essential to Life For four decades our chlor alkali business Inside the Essential has supplied caustic soda, chlorine and allied products to aluminium, textiles, paper, pharmaceuticals and water treatment, the Report industries on which a growing economy to Industry depends. Built on captive salt, integrated operations and a long record of India-first and world-first innovation, it remains a benchmark Introducing for efficiency and environmental care. Chemfab Alkalis Limited Essential Our OPVC pipes business carries the same About the Company 04 purpose into water infrastructure. As the country Our Journey 06 builds out its water supply and distribution networks, our pipes bring the strength, durability Business Segment 1 - to Life 08 and reliability that these systems require, Chlor Alkali placing us at the centre of one of India’s most Business Segment 2 - OPVC Pipes 12 important public priorities. Essential to industry and essential to life, these two businesses define who we are and the value Growth Drivers we create for the country we serve. Demand Drivers 16 Capacity Expansion Plans 18 Performance in Review Key Performance Indicators 20 Management Perspective 22 Strategic Focus Areas 24 Commitment to Responsibility Corporate Social Responsibility 26 Forward-looking statements This document includes forward-looking statements pertaining to Environmental Initiatives 28 anticipated future events and the financial and operational outcomes of Chemfab Alkalis Limited(‘Chemfab’ or ‘Company’). Given their nature, People Initiatives 30 these forward-looking statements necessitate our Company to make assumptions and are inherently susceptible to risks and uncertainties. Some products rarely draw attention, Management Discussion There exists a prominent risk that the assumptions, predictions, and 32 other forward-looking statements may not prove to be precise. Readers and Analysis Report yet very little moves without them. are advised against placing undue reliance on these forward looking statements, as various factors could lead to disparities between At Chemfab Alkalis we make two of assumptions and actual future results and events. Consequently, this document is subject to a disclaimer and is qualified in entirety by the them. Our chemicals keep industry assumptions, qualifications, and risk factors outlined in our company’s Statutory Reports Annual Report. running and our pipes carry water Notice of the 17th AGM 38 across the networks that supply Board of Directors’ Report 50 To view our report cities, communities and farms. online, please visit: Report on Corporate Governance 79 Both are foundational to a growing https://chemfabalkalis.com economy, and both are essential. Financial Statements Standalone Financial Statements 96 Consolidated Financial Statements 180 Scan QR code to see this Annual Report online A Tribute to one of the Greatest Technocrats, Innovators and Visionaries of our times We at CCAL pledge to Dr C.H.Krishnamurthi Rao carry forward your legacy and fulfil your 7.11.1940-19.1.2012 Founder Chairman- cherished dreams. Chemfab Team Group of Companies Dr Rao Holdings Pte Ltd., Singapore 01 Corporate Overview 02 Statutory Reports 03 Financial Statements ABOUT THE COMPANY Two Businesses, Vision Statement One Standard of To achieve leadership through highly efficient operations, best practices Excellence and environment-friendly technology, thereby generating significant value to all stakeholders. Chemfab Alkalis Limited manufactures products that meet two essential needs of a growing economy, industrial chemistry and water infrastructure. Our Moto Built on strong technical Technological capability and sustainable dynamism with operations, the Company environmental runs two independent commitment. business divisions, and each has its own markets, growth drivers and operating rhythm. The chlor alkali division at Puducherry is a fully integrated chemical operation that draws on captive salt fields and in-house utilities. Its portfolio of caustic soda, hydrochloric acid, liquid chlorine and allied products reaches industries as varied as aluminium, textiles and pharmaceuticals, and vertical integration, process innovation and disciplined environmental compliance together keep the model cost efficient through commodity cycles. 02 65,700 TPA 68% The Oriented Poly Vinyl Chloride (OPVC) pipes division at Sri City Manufacturing units Chlor alkali installed FY26 revenue from in Andhra Pradesh serves India’s across India capacity (in TPA) chlor alkali segment expanding water distribution networks. Its products are specified in public infrastructure programmes across a growing number of states, and its 219 20,000 TPA 32% advanced technology and precision manufacturing position Team members across OPVC pipes capacity FY26 revenue from OPVC the division to meet the rising need for durable and efficient pipeline all operations as of FY26 (TPA) pipes segment systems. 4 Chemfab Alkalis Limited / Annual Report 2025-26 Chemfab Alkalis Limited / Annual Report 2025-26 5 0011 CCoorrppoorraattee OOvveerrvviieeww 0022 SSttaattuuttoorryy RReeppoorrttss 0033 FFiinnaanncciiaall SSttaatteemmeennttss OUR JOURNEY A Record of Firsts in Chemistry and Infrastructure 1980s–2000s: Foundations and Firsts 2017–2020: Market Entry and Establishment Chlor-Alkali Business OPVC Pipes Business For over four decades, the 1985: First in India to implement membrane cell Since 2018, the OPVC pipes 2017: Bureau of Indian Standards issued IS 16647:2017 for technology for caustic soda production, eliminating OPVC pipes, paving the way for formal adoption and chlor-alkali division has defined division has grown into a mercury and improving efficiency with a pilot capacity of local manufacturing Chemfab’s standing as an defining participant in India’s 6,250 TPA integrated manufacturer of water infrastructure build- 2018: Chemfab commissioned its first OPVC pipes line at essential chemicals. Built 1997: Capacity enhanced to 33,000 TPA out. Combining advanced Sr [Showing first 8,000 characters — download PDF for full document]