Life Cycle Assessment (LCA) is a comprehensive assessment method for the environmental impact of a product, process, or activity throughout its entire lifecycle, from raw material acquisition, production, use to final disposal. It aims to comprehensively and systematically quantify and evaluate the resource consumption, energy use, and various environmental emissions involved in these stages, in order to provide scientific basis for decision-makers to identify and select environmentally friendly products, processes, or services, and help achieve sustainable development goals.