Constantia Flexibles has published a Low Carbon Aluminum white paper, introducing a framework that defines low-carbon aluminum based on Product Carbon Footprint (PCF) and independently verified mass balance certification. The company classifies low-carbon aluminum into two categories: ≤6.1 tCO₂e/t for primary aluminum produced with renewable electricity, and ≤4.5 tCO₂e/t for aluminum combining renewable electricity with recycled content. The initiative aims to improve carbon transparency in aluminum packaging and support customers' ESG and decarbonisation goals.