My research enhances the sustainability of industrial and societal systems through rigorous Life Cycle Assessment (LCA). Adhering to ISO 14040/14044 standards, my assessments quantify a wide spectrum of environmental impacts, including carbon footprint, eutrophication, resource depletion, and fine dust emissions. I develop and apply quantitative methodologies for emerging green technologies like hydrogen energy systems, waste-to-energy processes, and circular economy models such as component refurbishment. My expertise includes building foundational Life Cycle Inventory (LCI) databases through on-site data collection, process modeling, and validation to ensure high-quality, regionally specific inventories. In both national R&D and direct corporate projects, I develop actionable carbon-neutrality roadmaps by identifying environmental hotspots and quantifying the reduction potential of various mitigation strategies. Furthermore, I translate these technical findings into data-driven proposals for revising national policies and industry standards, like the Korean Environmental Product Declaration (EPD) system. My goal is to bridge the gap between technological innovation and its verifiable environmental performance, ensuring that advancements lead to measurable and meaningful sustainability gains.