Enclosed are the details.

20th August, 2026 BSE Limited National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers, Exchange Plaza, Plot no. C/1, Dalal Street, G Block, Bandra-Kurla Complex Fort, Mumbai – 400 001 Bandra (E), Mumbai - 400 051 Scrip Code: 543318 Trading Symbol: CLEAN Subject: Intimation under Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 Incorporation of Clean Science International B.V. (wholly Owned subsidiary of Clean Fino-Chem Limited) Dear Sir/Madam, Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015 (“LODR Regulations”) and in continuation of our letters dated 30th July, 2026 and 1st August, 2026, we hereby inform you that, Clean-Fino Chem Limited, a wholly owned subsidiary of Clean Science and Technology Limited, has incorporated a wholly owned subsidiary, namely, “Clean Science International B.V.”, in the Netherlands. The requisite details as prescribed under Regulation 30 read with Schedule III of the LODR Regulations are enclosed herewith as Annexure. The intimation is also being uploaded on the website of the Company at www.cleanscience.co.in You are requested to take above information on record. Thanking You. For Clean Science and Technology Limited Ruchita Vij Company Secretary & Compliance Officer Annexure Sr. Particulars Details 1. Name of the entity, date & Name of the Company: country of Incorporation, size, Clean Science International B.V. turnover etc. Date of Incorporation: 19th August, 2026 Date of Registration: 20th August, 2026 Country of Incorporation: Netherlands The entity is incorporated with an initial capital of an amount equivalent to EUR 50,000. Shares at a face value of EUR 1 per share. Size/Turnover: Not applicable as newly incorporated 2. Name of holding company of This is a wholly owned subsidiary of Clean Fino- the incorporated company Chem Limited, which in turn step down and relation with the listed subsidiary of the Clean Science and Technology entity. Limited. 3. Industry to which the entity Speciality Chemicals being incorporated belongs. 4. Brief background about the The Company will be engaged in the business of entity incorporated in terms selling/distribution/trading/Job work of of products / line of business. speciality Chemicals and related products/activities. 5. Objects and impact of Not applicable as this intimation is about acquisition (including but not Incorporation of a WOS of Clean Fino-Chem limited to, disclosure of Limited, which in turn step down subsidiary of reasons for acquisition of the Clean Science and Technology Limited. target entity, if its business is outside the main line of business of the listed entity) 6. Brief details of any governmental or regulatory approvals required for the incorporation. 7. Indicative time period for completion of the acquisition 8. Percentage of shareholding / The Company is incorporated as a wholly owned control acquired and / or subsidiary of Clean Fino-Chem Limited, which in number of shares acquired turn step down subsidiary of the Clean Science and Technology Limited. 100% of shares held by the Clean Fino-Chem Limited. 9. Nature of consideration - The entity is incorporated with an initial capital whether cash consideration or of an amount equivalent to EUR 50,000. share swap and details of the same 10. Cost of subscription/price at EUR 1/Share which the shares are subscribed 11. Brief background about the Not applicable, as this intimation is about entity acquired in terms of Incorporation of a WOS of Clean Fino-Chem products/line of business Limited, which in turn step down subsidiary of acquired, date of the Clean Science and Technology Limited. incorporation, history of last 3 years turnover, country in which the acquired entity has presence and any other significant information (in brief)