Certificate under Reg. 74 (5) of SEBI (DP) Regulations, 2018

(Formerly – Kilpest India Limited) Ref. No.P-66/2026-27/46 October 9, 2026 The Relationship Manager, Department of Corporate Relations BSE Limited, P.J. Towers, Dalal Street Fort, MUMBAI – 400 001 Dear Sir, Certificate under Regulation 74(5) of Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018 for the quarter ended 30th September, 2026 We submit herewith confirmation certificate, in compliance with the provisions of Regulation 74(5) of the Securities and Exchange Board of India (Depositories and Participants) Regulations, 2018, received from Ms. Adroit Corporate Services Pvt. Ltd., Registrar and Share Transfer Agent (RTA) for the quarter ended 30th September, 2026. You are requested to kindly take the above information on record. Thanking You, For 3B BlackBio Dx Limited (Formerly, Kilpest India Limited) Nikhil Kuber Dubey Whole Time Director DIN: 00538049 Encl: As above Regd. Office & Factory : 7-C | Industrial Area | Govindpura | Bhopal – 462023 | (M.P.) | INDIA CIN : L24211MP1972PLC001131 Ph.: 91-755-2586536, 2586537 Email : info@kilpest.com Visit us at : www.kilpest.com 03 October 2026 3B BLACKBIO DX LIMITED 7-C INDUSTRIAL AREA GOVINDPURA BHOPAL 462023 Subject: Confirmation Certificate in the matter of Regulation 74(5) of Securities and Exchange Board of India (Depositories and participants) Regulations, 2018. Dear Sir/Madam, In reference to the above captioned regulation,we hereby confirm that the securities received from the depository participants for dematerialisation during the quarter ended 30th September,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 regist- ered owner within 15 days. We request you to kindly take note of the above in your records. Thanking you, Yours faithfully, For Adroit Corporate Services Pvt. Ltd. Authorized Signatory. 19-20 Jaferbhoy Industrial Estate, Makwana Road, Marol Naka, Andheri (E), Mumbai, Maharashtra, 400 059. Tel: 022 - 4227 0400, 2859 4060. Fax: 2850 3748. Email: info@adroitcorporate.com CIN: U67190MH1994PTC079160