 MONTREAL, Sept. 14, 2021 GLOBE NEWSWIRE -- PyroGenesis Canada Inc. NASDAQ: PYR TSX: PYR FRA: 8PY, a high-tech Company hereinafter referred to as the Company or PyroGenesis, that designs, develops, manufactures and commercializes advanced plasma processes and sustainable solutions to reduce greenhouse gases, is pleased to announce today that, following its acquisition of AirScience Technologies Inc. AST, PyroGenesis is in the process of renaming its subsidiary to Pyro Green-Gas. Pyro Green-Gas will continue to be a wholly owned subsidiary of the Company. 