Guelph, Ontario--(Newsfile Corp. - May 13, 2026) - Zentek Ltd. (TSXV: ZEN) (NASDAQ: ZTEK) ("Zentek" or the "Company") is pleased to announce that Innovative Solutions Canada ("ISC") has added ZenGUARD™ Enhanced Air Filters to its Pathway to Commercialization ("PTC") source list. This step establishes Zentek as an exclusive supplier within the PTC framework of this type of innovation to the Government of Canada, administered through ISC, for a three-year period, during which any federal department or agency ...