This document is a report detailing KDDI's various environmental sustainability initiatives aimed at recycling and reducing waste. It outlines the company's efforts in recycling retired telecommunications equipment and used cell phones, achieving a material recycling ratio of 99.8%. The report describes the manual disassembly process of used mobile devices to extract valuable materials while preventing environmental contamination. Additionally, KDDI has shifted to using FSC-certified paper bags and is promoting web-based invoices to reduce paper usage. The introduction of a compact SIM card design aims to cut plastic use by 55%, contributing to lower CO2 emissions. The document also discusses water recycling practices in data centers and the use of biodegradable alternatives to traditional plastics. KDDI's investment in Emulsion Flow Technologies for lithium battery recycling is highlighted, along with their initiative to reduce food waste through the au PAY Market. Lastly, KDDI's membership in Circular Partners emphasizes their commitment to a circular economy.