Hioki E.E. Corporation, started in 1935 by Mizo Hioki in Tokyo and now headquartered in Ueda, Nagano, is a global force in electrical test and measurement instruments. Its catalogue runs to more than 200 products, including the PW8001 power analyzer, the RM3545A resistance meter, and the LR8450 data logger, serving automotive, aerospace, railway, and renewable-energy customers. Present in 10 countries through subsidiaries such as Hioki India (established 2019), the firm employs roughly 1,000 people and channels about 10% of revenue into R&D at its Hioki Innovation Center. Listed on the Tokyo exchange (TSE: 6866), it stresses safety, quality, and sustainability, reached 100% renewable energy at its head-office plant in 2021, and set circular-economy targets in 2025. Among its newer products are the FA1823 Flying Probe Tester for IC substrates and the ALDAS-Mini for analyzing electrolysis cells.