Clean Science and Technology Limited

rs,

17th July, 2025 To BSE Limited Phiroze JeeJeebhoy Towers, Dalal Street, Fort, Mumbai – 400 001 Scrip Code: 543318 Subject: Investor Presentation. Dear S

INR 950 crore

tum Robust uptake in HALS Record new launches ➢ Achieved record-high consolidated revenue of INR 950 crores in FY2025, driven by all-time high volumes across products ➢ Continued diversification in product

25%

ven by all-time high volumes across products ➢ Continued diversification in product mix, with over 25% revenue contribution from newer launches, with EBITDA margins remaining robust at ~41% ➢ Strong ch

41%

x, with over 25% revenue contribution from newer launches, with EBITDA margins remaining robust at ~41% ➢ Strong chemistry capabilities across complex molecules drive encouraging new product pipeline

3.3x

across multiple HALS grades and deepened distribution network ➢ HALS’ sales volume scaled up by 3.3x to over 1,900 tons in FY2025 ➢ Developed new value chain via complex chemistry capabilities includ

46%

sable market 3 Q1 FY 2026 Business Update Q1 FY2026 UPDATE Record high EBITDA margins of over 46%, since listing, led by favorable product mix 181 195 225 217 228 232 245 220 Revenue in I

42.4%

220 Revenue in INR Crore Q2 FY24 Q3 FY24 Q4 FY24 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY25 Q1 FY26 42.4% 44.9% 44.4% 45.5% 42.1% 44.8% 43.8% 46.4% 34.7% 9.5% 33.6% 9.0% 34.4% 34.1% 7.9% 8.7

44.9%

evenue in INR Crore Q2 FY24 Q3 FY24 Q4 FY24 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY25 Q1 FY26 42.4% 44.9% 44.4% 45.5% 42.1% 44.8% 43.8% 46.4% 34.7% 9.5% 33.6% 9.0% 34.4% 34.1% 7.9% 8.7% 36.6

44.4%

in INR Crore Q2 FY24 Q3 FY24 Q4 FY24 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY25 Q1 FY26 42.4% 44.9% 44.4% 45.5% 42.1% 44.8% 43.8% 46.4% 34.7% 9.5% 33.6% 9.0% 34.4% 34.1% 7.9% 8.7% 36.6% 9.6%

45.5%

Crore Q2 FY24 Q3 FY24 Q4 FY24 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY25 Q1 FY26 42.4% 44.9% 44.4% 45.5% 42.1% 44.8% 43.8% 46.4% 34.7% 9.5% 33.6% 9.0% 34.4% 34.1% 7.9% 8.7% 36.6% 9.6% 35.7%

42.1%

Q2 FY24 Q3 FY24 Q4 FY24 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY25 Q1 FY26 42.4% 44.9% 44.4% 45.5% 42.1% 44.8% 43.8% 46.4% 34.7% 9.5% 33.6% 9.0% 34.4% 34.1% 7.9% 8.7% 36.6% 9.6% 35.7% 37.3%

44.8%

Q3 FY24 Q4 FY24 Q1 FY25 Q2 FY25 Q3 FY25 Q4 FY25 Q1 FY26 42.4% 44.9% 44.4% 45.5% 42.1% 44.8% 43.8% 46.4% 34.7% 9.5% 33.6% 9.0% 34.4% 34.1% 7.9% 8.7% 36.6% 9.6% 35.7% 37.3% 8.4%

Key functions

2

Genesis

1

Genesis

➢ Technocrat Promoters collaborated to develop novel, clean and sustainable chemical processes ➢ Aligned to the philosophy, Company was named as Clean Science and Technology ➢ Commercialized TBHQ 2022 2023 ➢ Commercialized largest plant for HALS from India ➢ Commercialized unique vapor phase route for Anisole ➢ Backward integration for flagship products 2020 2021 ➢ Commercialized unique technology process for DCC ➢ Commercialized HALS 770 & 701 ➢ Expanded capacity of MEHQ, Guaiacol and BHA by 50% ➢ Commercialized unique catalytic process for 4-MAP 2014 2018 2009 ➢ Commercialized unique catalytic process for MEHQ and Guaiacol 2011 ➢ Commercialized unique catalytic forward integration process for BHA 2025 967 2025 2024 ➢ Commercialized BHT, DHDT ➢ Recorded highest volume across products 10 DIVERSIFIED PRODUCT PROFILE SERVING CRITICAL END-USER INDUSTRIES Largest capacity in the world for our flagship products PERFORMANCE CHEMICALS PHARMA AND AGRO INTERMEDIATES FMCG CHEMICALS MEHQ (Monomet

Key functions

Business operations Promoters’ sole business interest remains Clean Science and Technology with 75% stake 14 ROBUST CORPORATE GOVERNANCE Distinguished Board of Directors and reputed financial market participants underscore sound governance PROFILE OF NON-EXECUTIVE, INDEPENDENT DIRECTORS ON THE BOARD PRADEEP RATHI PROF. G. D. YADAV Sanjay Kothari Chairman and Non-Executive Director Non-Executive, Independent Director Non-Executive, Non-Independent Director B.Sc, M.S. (MIT, USA) MBA (Columbia, USA) Chairman – Sudarshan Chemicals B.Chem. Engineering, Ph.D Technology B.Com (University of Calcutta) Member of ICAI and ICSI KEVAL DOSHI Non-Executive, Independent Director B.Com. (University of Mumbai) Member of ICAI Erstwhile Partner at Ernst & Young LLP MADHU DUBHASHI Non-Executive, Independent Director PG in Business Administration (IIM Ahmedabad) Balanced board ensures transparency and accountability Highly experienced and diversified non-executive directors, are also board members of other