Sankosha Corporation

Sankosha Corporation (株式会社サンコーシヤ) is a Japanese manufacturer headquartered in Chuo-ku, Tokyo, that describes itself as a comprehensive maker supporting infrastructure through lightning protection technology and electrical communication equipment. Its corporate message on its official website frames the company's mission around keeping everyday essentials — street lighting, family telephone connections, and commuter trains — reliably available, positioning its products as behind-the-scenes enablers of modern urban life. The company's product portfolio centers on lightning protection and surge protection devices (SPDs), grounding and earthing systems, external and internal lightning protection systems, communication equipment, security devices, power equipment, and optical sensor information control devices. Its official site highlights products such as lightning surge counters (including the SC-401A), communication SPDs in the ZP series with UL certification, and EV charging equipment from EVSIS. Sankosha also engages in electrical and telecommunication construction work through group companies. Sankosha operates through an extensive domestic and international group structure. Domestic subsidiaries include Franklin Japan (lightning and weather forecasting, observation systems and software), Hokuriku Sankosha, Kyushu Sankosha, Sankosha System Engineering, Opt Techno, Kitakyushu Jusetsu, Beta Tech, Ace Lion, Sankosha Estate, Ryzen, Ibaraki Tech, Nakazaki Electronics, and Infront. Overseas group companies span the United States (SANKOSHA U.S.A., SANKOSHA ENERGY AMERICA), China (Guangzhou Shengkesa Lightning Protection Technology, Shanghai Sankosha International Trading), Hong Kong, Taiwan, South Korea, Thailand, Vietnam, Indonesia, and Malaysia (L.V. Control Sdn. Bhd.). In Japan, Sankosha products are distributed through a network of authorized dealers, special agents, and major handling stores listed on its website, covering regions from Hokkaido and Tohoku to Shikoku and Kyushu/Okinawa. The company also maintains a corporate presence through CSR activities, SDG initiatives, exhibitions such as CEATEC, and educational events like parent-child radio workshops. Sankosha is a member of the Sankosha Group and continues to position itself as a total manufacturer in the lightning protection and telecommunications infrastructure space.

Sankosha Corporation is a Japanese company headquartered in Chuo-ku, Tokyo, operating as a comprehensive manufacturer in the fields of lightning protection technology and electrical communication equipment. While the exact founding year is not provided in the available evidence, the company has established itself as a long-standing supplier of infrastructure-related products in Japan. The company's core business revolves around protecting infrastructure from lightning damage and ensuring reliable electrical communication. Its product lines include lightning protection systems, surge protection devices (SPDs), grounding systems, communication equipment, security devices, power equipment, and optical sensor information control devices. The official website emphasizes the company's role in supporting everyday infrastructure such as street lighting, telephone connections, and commuter trains. Over time, Sankosha has expanded through both organic growth and the formation of a group structure. The Sankosha Group now includes numerous domestic subsidiaries covering specialized areas: Franklin Japan handles lightning and weather forecasting, observation systems, and software development; Hokuriku Sankosha and Kyushu Sankosha handle regional sales and construction for lightning protection, information communication, and environmental products; Sankosha System Engineering performs grounding and electrical communication construction; Opt Techno manufactures and sells optical sensor information control devices; and other subsidiaries handle manufacturing, assembly, real estate management, and telecommunications contracting. Internationally, Sankosha has established a significant presence across Asia and the United States. Overseas group companies include SANKOSHA U.S.A., INC. and SANKOSHA ENERGY AMERICA, INC. in the United States; Guangzhou Shengkesa Lightning Protection Technology, Shanghai Sankosha International Trading, and Sankosha Hong Kong in China and Hong Kong; Sankosha Taiwan; SANKOSHA KOREA CORPORATION; SANKOSHA ENGINEERING (THAILAND) CO., LTD.; SANKOSHA VIETNAM; PT. SANKOSHA INDONESIA; and L.V. Control Sdn. Bhd. in Malaysia. These entities engage in sales, manufacturing, and development of communication equipment, lightning protection products, and related systems. In Japan, Sankosha distributes its products through a network of authorized dealers, special agents, and major handling stores. The company's website lists partners such as Kitayama Kosha in Hokkaido, Taihei Kogyo in Iwate, Kuzumi Denki in Niigata, Hinata Denki in Nagano, Hokuriku Sankosha in the Hokuriku region, Shikoku Tsusho in Shikoku, and Kyushu Sankosha in Kyushu/Okinawa, among others. This distribution network ensures broad coverage across Japan. Sankosha also engages in corporate social responsibility and sustainability initiatives, including SDG actions, environmental efforts, quality initiatives, and information security measures. The company participates in industry exhibitions such as CEATEC and organizes educational events like parent-child radio workshops. Its official website provides corporate information including company overview, business introduction, management philosophy, officers, history, major bases, group companies, awards, and securities reports, indicating a structured and transparent corporate governance approach. Today, Sankosha continues to position itself as a total manufacturer supporting infrastructure through its lightning protection and electrical communication technologies, with a focus on reliability and innovation in its product offerings.

• EVSIS EV chargers added to product lineup

• Lightning surge counter SC-401A added to product page

• Communication SPD ZP series (UL certified) added

• Exhibiting at CEATEC 2026 (October 13–16, 2026)

Comprehensive manufacturer supporting infrastructure through lightning protection technology and electrical communication equipment.

• Lightning surge counter SC-401A

• Communication SPD ZP series (UL certified)

• EVSIS EV chargers

1. 1株式会社サンコーシヤ 公式サイトsankosha.co.jp
2. 2企業情報｜株式会社サンコーシヤsankosha.co.jp
3. 3正規代理店・特約店・主な取扱店様｜株式会社サンコーシヤsankosha.co.jp
4. 4グループ会社｜株式会社サンコーシヤsankosha.co.jp
5. 5Sankosha Corporation (Japan) - Wikidatawikidata.org