Rain Industries Limited - Press Release

RAIN INDUSTRIES LIMITED RIL/SEs/2026 September 24, 2026 The General Manager The Manager Department of Corporate Services Listing Department BSE Limited The National Stock Exchange of India Limited Phiroze Jeejeebhoy Towers Bandra Kurla Complex Dalal Street, Fort Bandra East Mumbai-400 001 Mumbai – 400 051 Dear Sir/ Madam, Sub: Press Release Ref : Scrip Code: 500339 (BSE) and Scrip code : RAIN (NSE) With reference to the above stated subject, please find enclosed herewith the Press Release dated September 24, 2026 issued by Rain Carbon Inc., (a wholly owned subsidiary of Rain Industries Limited (the Company)) and BioBTX BV (a leading circular chemistry technology developer based in Groningen, the Netherlands) stating that a strategic collaboration to bring renewable aromatic products to the chemical industry, supporting the transition toward more circular and sustainable value chains. This is for your information and record. Thanking you, Yours faithfully, for Rain Industries Limited S. Venkat Ramana Reddy Company Secretary Regd. Office: Rain Center Phone : +91 (40) 40401234 34, Srinagar Colony Fax: + 91 (40) 40401214 Hyderabad 500073 Email:secretarial@rain-industires.com Telangana, India Website: www.rain-industries.com CIN:L26942TG1974PLC001693 BioBTX and Rain Carbon Collaborate to Supply Renewable Aroma(cid:415)cs to the Chemical Industry Groningen, the Netherlands / Zelzate, Belgium, 24 September 2026 - BioBTX and Rain Carbon are pleased to announce a strategic collabora(cid:415)on to bring renewable aroma(cid:415)c products to the chemical industry, suppor(cid:415)ng the transi(cid:415)on toward more circular and sustainable value chains. In July 2026, BioBTX announced a posi(cid:415)ve Final Investment Decision (FID) for the construc(cid:415)on of its first commercial-scale plant in Delfzijl, the Netherlands. Based on its proprietary Integrated Cataly(cid:415)c Cracking Process (ICCP) technology, the facility will be the world's first dedicated greenfield plant to convert plas(cid:415)c waste into approximately 10,000 tonnes per year of renewable aroma(cid:415)c oil containing benzene, toluene, xylenes and other aroma(cid:415)c products. The plant is expected to become opera(cid:415)onal in early 2028, marking a significant milestone in the commercial produc(cid:415)on of circular aroma(cid:415)cs. For more than 150 years, Rain Carbon has transformed industrial by-products into essen(cid:415)al carbon products and advanced materials, used in a wide range of chemical applica(cid:415)ons. Through this collabora(cid:415)on, Rain Carbon will convert BioBTX's circular aroma(cid:415)c oil into benzene, phthalic anhydride, and other aroma(cid:415)c deriva(cid:415)ves that meet the same rigorous quality and performance standards as conven(cid:415)onal fossil-based products. This will enable customers across industries to reduce the carbon footprint of their supply chains without compromising product performance. Kris Vanherbergen, EVP Carbon Dis(cid:415)lla(cid:415)on & Advanced Materials, Rain Carbon: “This partnership with BioBTX aligns perfectly with Rain Carbon’s mission to create value from alterna(cid:415)ve carbon sources. By combining BioBTX’s innova(cid:415)ve technology with Rain Carbon’s aroma(cid:415)c processing exper(cid:415)se, we can provide the market with renewable, drop-in solu(cid:415)ons that contribute to a more circular and sustainable future.” Ton Vries, CEO BioBTX: “We have seen significant interest in our renewable aromatic oil from companies serving markets such as pharmaceuticals, coatings, toys, and automotive applications. Demand for products with higher recycled content and lower carbon footprints continues to grow, creating a clear need for circular raw materials. Together with Rain Carbon, we can help customers build more sustainable supply chains and accelerate the transition to a circular economy.” Joint Press Release BioBTX x Rain Cabon About BioBTX BV BioBTX is a leading circular chemistry technology developer based in Groningen, the Netherlands. Founded in 2012, BioBTX develops technologies that replace fossil resources with plas(cid:415)c waste and biomass for the produc(cid:415)on of drop-in chemicals and renewable aroma(cid:415)cs (BTX), enabling sustainable and future-proof materials. Having successfully demonstrated its proprietary ICCP technology at its pilot plant in Groningen, BioBTX is now realising the world’s first commercial- scale renewable aroma(cid:415)cs plant at the Chemical Park Delfzijl. Beyond this first plant, BioBTX aims to roll out and license its technology to partners worldwide. BioBTX’ mission is to make circular chemistry possible and to accelerate the transi(cid:415)on towards a defossilised, circular chemical industry (www.biobtx.com). About Rain Carbon Inc. Rain Carbon Inc., a company with headquarters in Dover, Delaware, USA, is a wholly owned subsidiary of Rain Industries Limited (NSE: RAIN), a public company listed at the Na(cid:415)onal Stock Exchange of India. Rain Carbon is a global, ver(cid:415)cally integrated supplier of a diversified por(cid:414)olio of carbon-based and chemical products that are essen(cid:415)al raw materials for staples of everyday life. The company's Carbon segment converts industrial by-products of oil refining, steel produc(cid:415)on, bio-based and recycling sources into high-value carbon materials and intermediate chemicals. The Advanced Materials segment extends the value chain of its carbon processing through the down-stream refining of a por(cid:415)on of its output into eco-friendly, specialized chemical products. RAIN products enable customers in the aluminum, green steel, graphite, energy storage, (cid:415)re, adhesive, coa(cid:415)ngs, pigment and specialty chemicals industries to transform by- products into usable, valuable products. Learn more at www.raincarbon.com Forward-Looking Statements This press release contains certain forward-looking informa(cid:415)on and forward-looking statements as defined in applicable securi(cid:415)es laws (collec(cid:415)vely referred to as “forward-looking statements”). Forward-looking statements involve known and unknown risks, uncertain(cid:415)es and other factors, which may cause the actual results, performance or achievements to be materially different from any future results, performance or achievements expressed or implied by the forward-looking statements. Factors that may cause actual results to vary include, but are not limited to, the outcome of collabora(cid:415)ve research project stated above. Readers are cau(cid:415)oned against unduly relying on forward-looking statements. Forward-looking statements are made as of the date of the relevant document and, except as required by law, the par(cid:415)es herein undertake no obliga(cid:415)on to update publicly or otherwise revise any forward-looking statements, whether as a result of new informa(cid:415)on or future events or otherwise. Joint Press Release BioBTX x Rain Cabon