Fenwal Controls of Japan, Ltd.

Fenwal Controls of Japan, Ltd. (日本フェンオール株式会社) is a Japanese company headquartered in Chiyoda-ku, Tokyo. It was established in May 1961 as a joint venture of U.S. FENWAL, Mitsui & Co., and Nippon Den-netsu. Its business spans SSP (disaster prevention: fire alarm systems, fire extinguishing systems, explosion suppression systems, overheat alarm systems), Thermal (temperature controllers, hot plates and equipment for semiconductor manufacturing, thermocouples for high-temperature furnaces), Medical (artificial kidney dialysis machines and medical devices), and PWBA (printed circuit board mounting/assembly, artwork design, noise countermeasures). Its shares are listed on the Tokyo Stock Exchange Standard Market, and it has a consolidated workforce of 271 (219 standalone) as of end-December 2025.

Fenwal Controls of Japan was established in May 1961 as a joint venture of U.S. FENWAL, Mitsui & Co., and Nippon Den-netsu. In 1963 it began production of electronic temperature controllers and thermoswitches, and in 1967 it built the Nagano Plant. In 1971 it delivered Japan's first Halon high-speed fire extinguishing system to Shikoku Bank, and built the Hachioji Center (now the R&D Center). It began producing digital temperature indicating controllers in 1974, started printed circuit board assembly in 1977, and began selling artificial kidney dialysis machines in 1983. In May 1988 it bought out all 62% of foreign-owned shares. In 1993 it acquired sales rights for the ultra-high-sensitivity smoke detection system 'HART', and in 1995 delivered Japan's first FM-200 high-speed fire extinguishing system. In June 1996 its shares were publicly listed over the counter, and it increased capital to 996.6 million yen through a public offering of 600,000 shares. In 2001 it began selling the dialysis management system Miracle-DIMCS21. In March 2002 it established Fenwal Facilities Co., Ltd., and in November 2004 established Fenwal Controls of Japan (H.K.) Limited. In December 2004 it listed on the JASDAQ Securities Exchange. In 2007 its residential fire alarm 'F12' won the 2006 Nikkei Excellent Products and Services Award, Excellence Award and the Nikkei Industrial Daily Award. In 2008 it began selling the residential fire alarm '煙雷', and in 2009 the '熱雷'. In October 2011 it established Fenwal Consulting (Shenzhen) Co., Limited and began selling the high-sensitivity aspirating smoke detection system 'SAS'. In December 2015 it listed on the Second Section of the Tokyo Stock Exchange. In July 2018 it absorbed Fenwal Facilities Co., Ltd. by merger, and in November 2018 the Nagano Plant was registered as a JCSS calibration provider. In January 2021 it acquired all shares of Shibaura Bosai Seisakusho Co., Ltd., making it a subsidiary. In 2022, due to the Tokyo Stock Exchange market restructuring, it listed on the Standard Market.

• SSP (disaster prevention)

  Fire alarm systems, fire extinguishing systems, explosion suppression systems, overheat alarm systems, and related engineering services.

• Thermal (temperature control)

  Temperature controllers, hot plates and equipment for semiconductor manufacturing, thermocouples for high-temperature furnaces, and other control equipment.

• Medical

  Artificial kidney dialysis machines and medical devices.

• PWBA (development, design, production contracting)

  Printed circuit board mounting and assembly, artwork design, noise countermeasures.

1. 1日本フェンオール株式会社fenwal.co.jp
2. 2沿革 - 日本フェンオール株式会社fenwal.co.jp
3. 3会社概要・役員一覧 - 日本フェンオール株式会社fenwal.co.jp
4. 4メディカルの沿革 - 日本フェンオール株式会社fenwal.co.jp