Corporate Data

The Company at a Glance

Corporate Principle

We will develop our human resources, establish relationships of mutual trust, take on the challenge of devising innovative technologies and contribute to society.

Message from the President

Since our founding in 1945, SEIWA ELECTRIC has been providing innovative products that contribute to the development of society at all our industrial sectors. Concurrently, we have been promoting initiatives to protect the global environment by developing energy-efficient products.

We declared "SEIWA SDGs", our commitment to the SDGs, based on our corporate principle, in 2021. Under this declaration, we devise solutions to various social issues and contribute to a sustainable society.

In our Medium-Term Management Strategy (2024-2026), we treat a sustainable organization as essential for a sustainable society. We will work on our issues in point of "Monodzukuri", "Market Creation" and "Technology" for a sustainable organization.

Going forward, we will continue to strengthen our corporate culture by improving our manufacturing and sales capabilities and increasing our operational efficiency. At the same time, we will develop highly original technologies and create innovative products.

April, 2024

Company data

Paid-up Capital 3,648 million yen
Consolidated Sales 23,760 million yen (for the year ended December 31, 2023)
Lines of Business ・ Information display systems

・ Industrial lighting equipment

・ Road and tunnel lighting equipment

EMC products

・ Wire protection devices

LED module products for lighting

Directors (as of Mar. 28, 2024)
President Teruaki Masuyama


(Managing Exective Officers)

Katsunori Inui

Masahiko Haruyama


(Operating Officers)

Keiji Teragaki

Mitsuhiko Takenouchi

Hiroyuki Kobayashi

Takashi Kawai

Kazuharu Mizumoto


(audit and supervisory

committee members)

Tomohiko Mochizuki

Kiyoteru Masumitsu ※

Kunio Chiyoda ※

※ External directors

Officers (as of Mar. 28, 2024)
Operating Officers

Masaya Furuta

Yukihiro Narihira

Kouji Taniguchi

Keiichi Iwami

Takuya Hasebe

Atsunobu Tokura

Tsuyoshi Kuramoto

Head office 36 Shin-ike,Terada,Joyo,Kyoto 610-0192

Phone:+81-774-55-8181, Fax:81-774-58-2034
Hokkaido Branch 7-1-1 Nishi,Oodori,Chuo-ku,Sapporo 060-0042

Phone:+81-11-222-5321, Fax:81-11-207-7180
Tokyo Branch 2-19-6 Yanagibashi,Taito-ku,Tokyo 111-0052

Chubu Branch 1-26-8 Aoi,Higashi-ku,Nagoya 461-0004

Kansai Branch 1-4-12 Utsubo-Honmachi,Nishi-ku,Osaka 550-0004

Thai Bangkok Representative Office 2 Jasmine City Building, 25th Floor, Sukhumvit Soi 23 (Prasarn Mitr),

Sukhumvit Road, Klong Toey Nue, Wattana, Bangkok 10110

Phone:+66 2-639-7223

Consolidated subsidiary
Consolidated subsidiaries Seiwa Technology Co.,Ltd.
Digitec Co.,Ltd.
Changshu Seiwa Electric Co.,Ltd.
Changshu Seiden Trading Co.,Ltd.