This report was prepared and compiled in accordance with GRI 2021 guidelines issued by Global Reporting Initiative (GRI) and the construction material industry set out by Sustainability Accounting Standards Board (SASB). Additionally, the report was in compliance with international guidelines and standards including: Global Cement and Concrete Association (GCCA), Sustainability Charter (ex. biodiversity and net zero emission), Sustainable Development Goals (SDGs) of UN, ISO 26000 Social Responsibility Guidelines and Dow Jones Sustainability Indices (DJSI). Furthermore, this report had passed the external assurance operation of SGS Taiwan Ltd. and complied with AA1000 AS Standard Type II moderate level third party assurance for the purpose of providing reliable public information to readers.