Focus Graphite Signs LOI for High-Performance Natural Graphite-Based RF Shielding Technology

About this update from Focus Graphite Inc.

Independently tested at the University of the German Federal Armed Forces in Munich, demonstrating up to 99.99% RF signal blocking across defence-relevant frequencies Ottawa, Ontario--(Newsfile Corp. - June 1, 2026) - Focus Graphite Inc. (TSXV: FMS) (OTCQB: FCSMF) (FSE: FKC0) ("Focus" or the "Company"), a Canadian developer of high-grade flake graphite deposits and advanced graphite materials for battery, defence, and industrial applications, is pleased to announce that it has entered into a non-binding Letter of Intent ("LOI") with PermaTint Ltd. ("PermaTint") (Shielding Solution) of Concord, Ontario, a developer and manufacturer of specialty coatings, to evaluate the integration of the Company's graphite into the formulation through planned validation testing, and to assess the potential acquisition or licensing of a proprietary radio frequency ("RF") shielding coating formulation (the "Product") containing graphite and demonstrating high-performance signal blocking capabilities. The Product, which contains natural flake graphite, has been independently tested by Shielding Solution, a division of PermaTint, at the University of the German Federal Armed Forces in Munich (Universitat der Bundeswher Munchen) in accordance with internationally recognized standards (IEEE 299 and ASTM D4935), which measure how effectively materials and systems block radio frequency signals. Testing across frequencies ranging from 5 GHz to 40 GHz demonstrated shielding effectiveness of approximately 36 dB to over 50 dB depending on coating thickness, corresponding to the ability to block up to 99.99% of electromagnetic radiation. Potential applications for RF shielding coatings include military and defence infrastructure, aerospace systems, secure communications environments, data centers, and protection of sensitive electronics from electromagnetic interference and signal intrusion. These applications are becoming critical as next-generation communications, electronic protection systems, and high-frequency technologies rapidly expand across defence and advanced technology sectors. Additional testing across lower frequency bands (100 MHz to 8 GHz) confirmed consistent shielding performance across commercial and defence-relevant communication ranges, including 5G and wireless systems. The Company intends to conduct...

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