Gaku Mitsumatsu has worked for Kobe Steel in Japan for over 30 years. He was originally an engineer in the aluminum sheet/plate business, but in the latter half of his career, He was involved in business planning, technology development planning, and capital investment planning for the entire non-ferrous metals business. Since 2020, he has overseen the entire aluminum suspension business across Japan, the United States, and China. Gaku Mitsumatsu has served as president at KAAP since April 2024.