Fenwal Controls of Japan, Ltd. (6870.T) develops, manufactures and sells thermal control-based products including fire protection systems such as fire alarms, fire-extinguishing equipment, industrial explosion protection and overheating alarm systems; temperature controllers, sensors, hot plates and apparatus for semiconductor manufacturing equipment; artificial kidney dialysis systems and other medical equipment; printed circuit board assembly services with artwork design and anti-noise measures; and fire pumps, water purifiers and related disaster prevention equipment, along with associated design, construction, maintenance and engineering services. Founded in 1961 and headquartered in Chiyoda-ku, Tokyo, the company operates primarily in Japan with sales extending to Asia through subsidiaries including Shibaura Fire Pump Co., Ltd., which it made wholly-owned in 2021, and focuses on safety, security, semiconductor, healthcare and electronics sectors serving key industries, machinery, construction and medical customers. In June 2024, Seika Corporation acquired a 23.34% stake via a capital and business alliance to strengthen sales of fire extinguishing equipment; the company continues expanding thermal sensor and hot plate demand in semiconductors under its 2025 medium-term plan while addressing SSP defect repairs and enhancing dialysis software functionality.