RAIN City Signs MOU with Y-Tec to Scale Zero-Water Lithium Extraction IN Argentina
145 – 251 Midpark Blvd S.E., Calgary Alberta T2X 1S3
RAIN CITY SIGNS MOU WITH Y-TEC TO SCALE ZERO-WATER
LITHIUM EXTRACTION IN ARGENTINA
Calgary, AB – October 16, 2025 – Rain City Resources Inc. (CSE: RAIN) ("RAIN" or the "Company") is
pleased to announce it has signed a comprehensive Memorandum of Understanding (MoU) with YPF
Tecnología S.A. ("Y- TEC"), the research and development arm of Argentina's national energy company
YPF S.A., one of Latin America's largest integrated energy co mpanies. Following the success of the pilot
plant in Pennsylvania, the MoU will be to further validate the cavitation-based Direct Lithium Extraction
("DLE") technology employed by RAIN via locating a pilot plant in South America. Thereafter, the parties
will work towards commercializing DLE in conjunction with RAIN in Argentina.
The technology will produce battery-grade Lithium Iron Phosphate ("LFP"), a key material for EV batteries
and energy storage, in Argentina. The agreement aligns with RAIN's San Martín Joint Venture with Lithium
Argentina Investments SA ("LAISA"), a collabo ration to develop lithium resources, leveraging LAISA's
extensive lithium brine concessions in Argentina for pilot testing and future development.
Key Highlights:
• Aligning with Argentina's Energy Leader – Collaborates with Y-TEC, the technology subsidiary of
national energy giant YPF S.A., providing further technical and institutional expertise for the San
Martín Joint Venture.
• Advances Zero -Water Lithium Extraction by seeking to further validate an eco -friendly DLE
process with zero water consumption, critical for water-scarce regions throughout the World.
• Focus on Stable LFP Production to strengthen global battery supply chains.
• Pursuing Vertical Integration by combining lithium brine access, technology, regional research
partnerships, and state- backed collaboration to deliver environmentally responsible energy
solutions.
• Outlines Scale- Up Plan via a further pilot program in South America with the objective of
confirming the model for a modular commercial facility.
• Sets Stage for Commercial Agreements by establishing a framework to negotiate technical and
commercial terms.
Benjamin Hill, CEO of RAIN said, "This MoU is a further step for RAIN in its objective to become a leader
in the DLE and sector and the Argentinian lithium industry. Partnering with Y-TEC, the technology arm of
YPF, enables us to further our chosen DLE technology for battery- grade LFP production— a critical
advancement that eliminates water consumption in water-scarce regions. This sustainable approach positions
us to meet the rapidly growing global demand for stable, reliable energy storage materials.”
About Rain City Resources Inc.
Rain is an integrated critical mineral technology and project development company committed to addressing
the environmental, social, and economic challenges of lithium and critical mineral extraction from brine. By
advancing scalable, water -conscious DLE s olutions, Rain is helping drive the transition to a clean energy
future.
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FOR FURTHER INFORMATION CONTACT:
Benjamin Hill David Shaw
Chief Executive Officer Chairperson
RAIN CITY RESOURCES INC.
Website: www.raincityresources.com
Email: [email protected]
Telephone: 403-693-8004
Cautionary Statement Regarding Forward-Looking Information
This news release may include certain "forward -looking statements" under applicable Canadian securities
legislation. There can be no assurance that such statements will prove to be accurate, as actual results and
future events could differ materially from those anticipated in such statements. Accordingly, readers should
not place undue reliance on forward-looking statements. Rain disclaims any intention or obligation to update
or revise any forward- looking statements, whether as a result of new information, future events or otherwise,
except as required by law. There can be no assurance that proposed operations will be successful or that the
anticipated financial, economic or strategic benefits will be realized.
Neither the Canadian Securities Exchange nor its Regulation Service Provider (as the term is defined in the
policies of the Canadian Securities Exchange) accepts responsibility for the adequacy of accuracy of this
news release.