Volt Carbon Technologies Inc. had announced independent third party testing results from the University of Waterloo relating to the Company's first expanded graphite foil trials derived from graphite processed using Volt's dry separation technology. The testing program evaluated thermal conductivity and electromagnetic interference shielding performance characteristics of expanded graphite foils produced from Volt processed graphite materials as part of the Company's ongoing advanced materials development initiatives. Thermal conductivity testing provided by the University of Waterloo demonstrated average in plane thermal conductivity values of approximately 219 W/m·K for Volt derived graphite foil at a thickness of approximately 0.189 mm.

For general reference purposes, published engineering reference sources such as Engineering Toolbox, including 'Thermal Conductivity of Metals and Alloys' and 'Aluminum Thermophysical Properties,' report thermal conductivity values for stainless steel in the range of approximately 15 W/m·K, while aluminum is commonly reported near approximately 205 W/m·K depending on alloy composition and test conditions. The expanded graphite foil evaluated in these trials exhibited a density of approximately 1.5 g/cm³. For general reference purposes, aluminum is commonly reported to exhibit density values near approximately 2.7 g/cm³, while stainless steel is commonly reported in the range of approximately 7.7 to 8.0 g/cm³ depending on alloy composition and processing conditions.

Although these density values may provide general context regarding potential thermal management and shielding design considerations, material property comparisons between differing material systems may not be directly comparable due to variations in structure, composition, operating environment and application specific performance requirements when considered in engineering design applications. EMI shielding evaluations conducted in the X band frequency range demonstrated total shielding effectiveness of approximately 42.7 dB for Volt derived graphite foil at a thickness of 0.189 mm. EMI shielding effectiveness measured in decibels represents attenuation of electromagnetic energy.

Volt's results correspond to signal attenuation greater than approximately 99.99%. Approximate signal attenuation equivalents corresponding to EMI shielding effectiveness are summarized below for general reference. Shielding Effectiveness (dB) Approximate Signal Attenuation 20 dB 99% 30 dB 99.9% 40 dB 99.99% 50 dB 99.999%.

Expanded graphite foil is fundamentally composed of highly aligned graphitic and graphene like carbon layers. Expanded graphite has a reduced number of graphitic layers compared to bulk graphite. Published literature, including Y. Liu et al., 'Graphene Enhanced Flexible Expanded Graphite Film with High Electric, Thermal Conductivities and EMI Shielding at Low Graphene Content,' Carbon, 2018, has reported expanded graphite and graphene enhanced expanded graphite films exhibiting thermal conductivity, electrical conductivity and EMI shielding characteristics relevant to conductive carbon material applications.

The Company believes the thermal conductivity and EMI shielding performance observed in these first trials support continued evaluation for Volt's dry separated natural graphite for potential use in graphene related and conductive carbon material applications. Published scientific literature, including A. Kausar, 'Graphene Nanocomposites for Electromagnetic Interference Shielding', Journal of Composites Science, 2023, and X. Li et al., 'Revealing Synergistic Relationship of Thermal Conduction and Electromagnetic Interference Shielding in Graphene Film', Materials Chemistry and Physics, 2025, has reported graphene and conductive carbon materials exhibiting strong thermal conductivity and EMI shielding performance characteristics. The Company continues to observe from ongoing testing results that preservation of graphite crystallinity through its dry separation process contributes to downstream conductive, thermal and material performance enhancements observed in expandable graphite, graphite foil and graphene related development programs. These results represent early stage expanded graphite foil development trials.

Additional optimization, densification, scale up and application specific validation work remains ongoing as the Company continues evaluating potential commercial applications for these materials, including ongoing discussions and evaluation activities with industry participants under confidentiality agreements. Volt plans to continue evaluating dry separated graphite materials for applications including expanded graphite products, thermal management materials, conductive composites and energy storage technologies. The Company has previously disclosed the addition of equipment supporting batch scale production and evaluation of expandable graphite and graphene related materials as part of its downstream development initiatives.