BioPower's Hardwood fuel pellets are 100% natural and made in Northern Ontario. All wood, no additives in these pellets - a sustainable supply of renewable energy. Sustainability and lifecycle: Lifecycle assessments and federal government analyses recommend that sustainably sourced wood pellets can have lower greenhouse fuel depth than fossil fuels, https://arthuriarfs.livebloggs.com/45647463/pure-biofuels-del-perú-fundamentals-explained