Zefiro subsidiary P&G continues to work with government agencies as a trusted service provider for projects involving several aspects of environmental remediation.FORT LAUDERDALE, Fla., June 18, 2025 (GLOBE NEWSWIRE) -- ZEFIRO METHANE CORP. (Cboe Canada: ZEFI) (Frankfurt: Y6B) (OTCQB: ZEFIF) (the “Company”, “Zefiro”, or “ZEFI”) is pleased to announce that its wholly owned subsidiary, Plants & Goodwin, Inc. (“P&G”), has been selected as the prime contractor for a three-year Construction Manager at Risk (“CMA ...