Copy of Draft Letter of Offer received from Vivro Financial Services Private Limited, the Manager to the Open received is enclosed.

Date: August 13, 2026 The Manager, Department of Corporate Services (DCS-Listing) BSE Limited, Phiroze Jeejeebhoy Towers, Dalal Street, Mumbai - 400 001 Scrip Code: BSE - 531667 Dear Sir/Madam, Sub: Disclosure pursuant to Regulation 30 of SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015. Ref: Draft Letter of offer for the proposed Open Offer for acquisition of Equity Shares from the Public Shareholders of RR MetalMakers India Limited (“Target Company”) by RB International Holdings Limited (“Acquirer 1”), Suyog Yogesh Desai (“Acquirer 2”) and Nikita Suyog Desai (“Acquirer 3”) pursuant to and in compliance with the requirements of the SEBI (SAST) Regulations (the “Open Offer” or “Offer”). Pursuant to Regulation 30 of the SEBI (Listing Obligations and Disclosure Requirements) Regulations, 2015, we wish to inform you that the Company has received a copy of the Draft Letter of Offer, issued by Vivro Financial Services Private Limited today i.e. August 13, 2026 (“Draft Letter of Offer”) in relation to an Open Offer to the Public Shareholders of the Company issued by RB International Holdings Limited (“Acquirer 1”), Suyog Yogesh Desai (“Acquirer 2”) and Nikita Suyog Desai (“Acquirer 3”) for acquiring the equity shares of the Company as per the requirements of the Securities and Exchange Board of India (Substantial Acquisition of Shares and Takeovers) Regulation 2011. A copy of the Draft Letter of Offer received by the Company is enclosed herewith. Kindly take the same in your records. Thanking you, For RR MetalMakers India Limited, Harshika Kothari Company Secretary & Compliance Officer Membership No.: A61964 Enc. GSTIN No.: 27AACCS1022K1ZL CIN No.: L51901MH1995PLC331822 Registered Office : B-001 & B-002, Ground Floor, Antop Hill Warehousing Complex Ltd, Barkat Ali Naka, Salt Pan Road, Wadala (E), Mumbai - 400 037, Maharashtra. Corporate Office :2nd Floor, Sugar House, 93/95, Kazi Sayed Street, Mumbai - 400 003. Ph.: 022-6192 5555 / 56 • Email :info@rrmetalmakers.com • Website : www.rrmetalmakers.com DRAFT LETTER OF OFFER THIS DOCUMENT IS IMPORTANT AND REQUIRES YOUR IMMEDIATE ATTENTION This Letter of Offer (“LOF”) (as defined below) will be sent to you as a Public Shareholder (as defined below) of RR Metalmakers India Limited (“Target Company” or “Company”). If you require any clarifications about the action to be taken, you may consult your stockbroker or investment consultant or Manager to the Offer (as defined below) or Registrar to the Offer (as defined below). In case you have recently sold your Equity Shares (as defined below) of the Company, please hand over this LOF and the accompanying Form of Acceptance (as defined below) and transfer deed to the member of Stock Exchange (as defined below) through whom the said sale was effected. OPEN OFFER (“Open Offer”/ “Offer”) BY RB International Holdings Limited (“Acquirer-1”), Kalamu House, 11 Coldbath Square, London, EC1R 5HL, United Kingdom. Contact No.: +44 7424443030 | Email ID: suyog@rexbrownltd.co.uk Suyog Yogesh Desai (“Acquirer-2”), Residing at 2A, Cowgate Road, Greenford, London – UB6 8HQ, United Kingdom. Contact No.: +44 7424443030 | Email ID: suyog@rexbrownltd.co.uk Nikita Suyog Desai (“Acquirer-3”), Residing at 11, Parambaug, Opp. Satyaraj Farm, Pipan, Sanand Bavla Highway, Pipan, Ahmedabad – 382110, Gujarat, India. Contact No.: +91 9099878677 | Email ID: nikitasuyog@yahoo.co.uk to the Public Shareholders of RR METALMAKERS INDIA LIMITED Registered Office: B-001 & B-002, Ground Floor, Antop Hill Warehousing Complex Ltd, Barkat Ali Naka, Salt Pan Road, Wadala (E), Mumbai - 400037, Maharashtra, India. Corporate Office: 2nd Floor, Sugar House, 93/95, Kazi Sayed Street, Mumbai – 400003, Maharashtra, India. CIN: L51901MH1995PLC331822 | Tel. No: (+91) 22 6192 5555 / 56 | Email: cs@rrmetalmakers.com | Website: www.rrmetalmakers.com to acquire up to 23,42,295 (Twenty Three Lakhs Forty Two Thousand Two Hundred Ninety Five) fully paid-up equity shares of face value of ₹ 10/- (Indian Rupees Ten Only) each, representing 26% (Twenty Six Percent) of the Equity Share Capital of the Target Company at a price of ₹ 23.85 (Rupees Twenty Three and Paisa Eighty Five Only) per Equity Share, payable in cash. P LEASE NOTE 1. This Open Offer is being made by the Acquirers pursuant to and in compliance with Regulations 3(1) and 4 and other applicable regulations of the Securities and Exchange Board of India (Substantial Acquisition of Shares and Takeovers) Regulations, 2011, as amended (“SEBI (SAST) Regulations”) 2. This Open Offer is not conditional upon any minimum level of acceptance in terms of Regulation 19 of SEBI (SAST) Regulations. 3. As on the date of this DLOF (as defined below), there are no statutory or other approval(s) required to complete the Underlying Transaction (as defined below) contemplated under the SPA (as defined below) and the acquisition of Offer Shares (as defined below) that are validly tendered pursuant to this Open Offer. However, in case any other statutory approvals become applicable and are required by the Acquirers at a later date before the closure of the Tendering Period (as defined below), this Open Offer shall be subject to receipt of such further approvals. 4. Where any statutory or other approvals extend to some but not all of the Public Shareholders (as defined below), the Acquirers shall have the option to make payment to such Public Shareholders in respect of whom no statutory approvals or other approvals are required in order to complete this Open Offer. 5. Under Regulation 18(4) of the SEBI (SAST) Regulations, the Acquirers are permitted to revise the Offer Price (as defined below) at any time prior to the commencement of the last 1 (One) Working Day (as defined below) before the commencement of the Tendering Period. In the event of such revision, in terms of Regulation 18(5) of the SEBI (SAST) Regulations, the Acquirers shall: (i) make corresponding increase to the escrow account, (ii) make a public announcement in the same newspapers in which the DPS (as defined below) was published, and (iii) simultaneously notify SEBI (as defined below), Stock Exchange and the Target Company at its registered office. Such revision would be done in compliance with other requirements prescribed under the SEBI (SAST) Regulations. The same price shall be payable by the Acquirers for all the Equity Shares tendered anytime during the Open Offer. 6. This Open Offer is not a competing offer in terms of Regulation 20 of the SEBI (SAST) Regulations. 7. There has been no competing offer as on the date of this DLOF. 8. A copy of Public Announcement (as defined below) and Detailed Public Statement (as defined below), DLOF, corrigendum, if any and LOF (including Form of Acceptance) shall be available on the website of Securities and Exchange Board of India (“SEBI”) i.e. www.sebi.gov.in and on the website of Manager to the Offer i.e. https://www.vivro.net/ All future correspondence, if any, should be addressed to the Manager to the Offer/ Registrar to the Offer at the address mentioned below: MANAGER TO THE OFFER REGISTRAR TO THE OFFER Vivro Financial Services Private Limited Adroit Corporate Services Private Limited Address: Vivro House, 11 Shashi Colony, Opp. Suvidha Shopping Centre, Address: 18-20, Jaferbhoy Industrial Estate, 1st Floor, Makawana Paldi, Ahmedabad – 380007. Gujarat. India. Road, Marol Naka, Andheri (East), Mumbai 400 059, Maharashtra, India. CIN: U67120GJ1996PTC029182 CIN: U67190MH1994PTC079160 Tel. No.: +91 79- 4040 4242 Tel No.: +91 22 42270449 Website: www.vivro.net Website: www.adroitcorporate.com SEBI Reg. No.: MB/INM000010122 SEBI Reg. No.: INR000002227 Email: investors@vivro.net Email: haraprasadn@adroitcorporate.com Contact Person: Shivam Patel Contact Person: Mr. Hara Prasad Nahak OFFER OPENS ON: Wednesday, September 23, 2026 OFFER CLOSES ON: Wednesday, October 7, 2026 TENTATIVE SCHEDULE OF MAJOR ACTIVITIES OF THE OPEN OFFER The schedule of major acti [Showing first 8,000 characters — download PDF for full document]