The Group addresses various economic, environmental and social challenges. From these challenges, four material issues that should be given priority in reporting to stakeholders were selected and consequently introduced in the Sustainability Report 2011. Important challenges are identified in accordance with the Global Reporting Initiative (GRI) guidelines. The numerous important challenges identified were first prioritized, before four material issues were subsequently selected following discussions and deliberation by the CSR Committee. As a result, in addition to the three material issues for fiscal 2010—"Developing environment-friendly technologies," "Implementing initiatives regarding climate change issues including global warming" and "Establishing a recycling-oriented society"—a fourth material issue, "Responses to the Great East Japan Earthquake," has been included in this report.