Junghan Yu has been deeply engaged in the hydrogen and fuel cell industry since 2006. From 2006 to 2020, he focused on hydrogen fuel cell electric vehicle development, specifically on designing fuel cell system interfaces and fuel cell stacks. In 2020, Junghan transitioned to the hydrogen electrolysis field, where he designed membrane electrode assemblies (MEA) for electrolyzers. Currently, he serves as the team leader overseeing the design of hydrogen electrolyzer stacks, managing and guiding the development of high-performance, reliable electrolyzer systems to support efficient and sustainable hydrogen production.