Company Profile

Corporate Data

Establishment Dec. 11, 1951
Capital ¥48 million
President Susumu Koike,
President and CEO
Employees 185 (as of February 27, 2024)
Shareholder ALCONIX Corporation 100% (listed on Tokyo Stock Exchange Prime)
Main Banks Bank of Tokyo-Mitsubishi UFJ, Mizuho Bank, The Toho Bank


HeadquartersLand: 545m2
Building (reinforced concrete, 3 stories): 968 m2
Fukushima PlantLand: 12,140m2
Building (reinforced concrete, partially 2 stories): 5,055m2
Kaminagura PlantLand: 11,063m2
Building (reinforced concrete, partially 2 stories): 4,531m2


December 1951 Ohkawa Corporation established to conduct electric machinery manufacturing (Equestrian Park, Setagaya, Tokyo).
May 1957 inmachi Plant constructed in Sakura-shinmachi, Setagaya, Tokyo.
July 1960 All headquarters and manufacturing functions moved to Sakura-shinmachi.
April 1989 Fukushima Plant completed (West Fukushima Industrial Park).
March 1997 1st Fukushima Plant expansion completed.
May 1998 All manufacturing functions moved to Fukushima Plant.
March 2002 Manufacturing reform activities initiated at Fukushima Plant.
April 2004 Fukushima Plant acquires ISO14001 certification.
September 2006 2nd Fukushima Plant expansion completed.
November 2007 ISO 9001/JIS Q 9100 certification acquired.
August 2009 100% capital investment by ALCONIX Corporation
November 2011 Completion of the phase-3 extension work on Fukushima Plant
May 2016 Start of operations at Kaminagura Plant (Fukushima Kaminagura Industrial Estate)
March 2018 Completion of the phase-2 extension work on Kaminagura Plant
March 2021 Completion of the phase-3 extension work on Kaminagura Plant


Tokyo Headquarters

Address.: 〒154-0015 2-11-20 Sakura-shinmachi, Setagaya-ku, Tokyo, Japan
Tel.: 03-3429-3223 (reception)
Fax: 03-3420-6092

Fukushima Plant

Address.: 〒960-2153 1-1 Ishizuka, Shono, Fukushima, Fukushima Prefecture, Japan
Tel.: 024-593-3331 (reception)
Fax: 024-593-3882

Kaminagura Plant

Address: 〒960-2102 2-5-10 Arai-kita, Fukushima City, Fukushima Prefecture, Japan
Tel.: 024-594-1010 (reception)
Fax: 024-593-3377

Chubu-Kansai Sales Office

Address: 〒453-0014 CUBE MEIEKI 1F, 1-16-18 Noritake Nakamura Ward, Nagoya City, Aichi Prefecture, Japan
Tel.: 052-325-3710
Fax: 052-453-2080

We accept inquiries related to our business,
plants or estimates through our inquiry form.