Corporate Info

Corporate Profile

Company Name ZEXUS CHAIN Co., Ltd.
Establishment of a company October 1, 2021 (Founded as a chain company in April 1972)
Capital 310 million yen
Representative Hiroaki Watanabe
President and Representative Director
Business activities Manufacture and sales of chains
Number of employees 150
Head Office Shin-Kokusai Building F8, 4-1, Marunouchi 3-Chome,
Chiyoda-ku, Tokyo 100-0005 Japan
Directors Director Hiroaki Watanabe
Director Akihiro Yoshinari
Director Taishi Yoshioka
Director Kenjiro Nagatomo
Director Kosuke Ueda
Executive Officers President and Executive Officer Hiroaki Watanabe
Managing Executive Officer Akihiro Yoshinari
Executive Officer Yasuhiro Kotani
Executive Officer Yoichiro Sugino

President’s Message

Meeting Today’s Diverse Application Challenges with Unique World Class Industrial Chain Products and Solutions

With more than 110 years of experience in the manufacture and application of industrial chains behind us, our company is uniquely positioned to assist customers in solving a wide variety of problems across industrial application. Inside our own factories we have been evolving and utilizing the latest in manufacturing technologies and quality standards to ensure customer satisfaction and enhanced product value.

As of December 2023, the Company joined the Mitsui Matsushima Holdings, is further strengthening its framework for meeting its customers’ needs rapidly, delivering products of the highest quality as a specialist in industrial chains.

The ZEXUS chain brand is derived from three words that exhibit the pride we have in our manufacturing base and home country of Japan (ZIPANGU), the passion we have for the industrial chain business (ZEAL) and desire to engage with customers and business partners to contribute to the advancement of society by providing advanced sustainable solutions (NEXUS).

We drive our business to demonstrate our values and spirit represented in our brand ZEXUS.

Thank you for visiting our home page and we are looking forward to the opportunity to serve your industrial chain needs.

President and Representative DirectorHiroaki Watanabe

Origin of the name “ZEXUS”

Origin of the name “ZEXUS”Origin of the name “ZEXUS”

We are a chain business with over 100 years of history, continually evolving alongside the development of society. Since the company’s founding, we have continually released industry0pioneering products. With pride for our home country and manufacturing case, Japan (which can also be called Zipangu), we will continue to apply our unshakable passion for our work (Zeal) and cutting-edge chain technologies to linking people and society, creating a chain of connections (Nexus) and supporting two-way communication.

Corporate Philosophy

Proposing appropriate solutions and ideal products for chain demand around the world


1910 Started manufacturing and selling chains (at Tobata Casting Co., Ltd. in Kitakyushu)
April 1956 Hitachi Metals Industries, Ltd. (currently, Proterial, Ltd.) established
April 1972 Hitachi Chain, Ltd. established
1986 Hitachi MAXCO, Ltd. (U.S.A.) established
April 1987 Hitachi Metals Techno, Ltd. established by merging Hitachi Chain, Ltd. and the Building Equipment Center of Hitachi Metals, Ltd. (currently, Proterial, Ltd.).
October 1991 Japanese name changed to Hitachi Kizai
December 1991 Listed on the Second Section of the Tokyo Stock Exchange
March 1994 Acquired the chains and access floor businesses from Hitachi Metals , Ltd. (currently, Proterial, Ltd.)
April 1994 Kanto Works established
January 2016 Company name changed to Senqcia Corporation
April 2021 Senqcia Chain Corporation established
Chain business transferred from Senqcia Corporation
February 2022 Company name changed to ZEXUS CHAIN Co., Ltd.

Beginning of ZEXUS CHAIN,”Tobata Casting Co., Ltd.”

Tobata Casting Co., Ltd.

In 1910, with the support of Kaoru Inoue, Yoshisuke Ayukawa founded Tobata Casting Co., Ltd. (currently, Proterial, Ltd.) in Tobata Town, Onga District, Fukuoka Prefecture (currently, Tobata Ward, Kitakyushu City).
The company began manufacturing malleable cast iron products. We were manufacturing the cast chains and sprockets that became the origin of our company business there.


Head Office Shin-Kokusai Building F8, 4-1, Marunouchi 3-Chome,
Chiyoda-ku, Tokyo 100-0005 Japan
View more details on Google Map >

  • TEL+81-3-4214-1915 Domestic Sales Dept.
    +81-3-4214-1921 International Sales Dept.
  • FAX+81-3-4212-3328
Kanto Works 5110 Mikajiri, Kumagaya City, Saitama Prefecture 360-0843
View more details on Google Map >

  • TEL+81-48-531-1900 main
  • FAX+81-48-531-1920
Sapporo Sales Office 7th floor of Sapporo Crest Building, 4-4-3 Kita-nanajo-nishi, Kita Ward, Sapporo City, Hokkaido 060-0807
View more details on Google Map >
Chubu Sales Office 4th floor of Fujiko Meieki Building, 5-21 Ushijima Town, Nishi Ward, Nagoya City, Aichi Prefecture 451-0046
View more details on Google Map >
Kansai Sales Office 9th floor of Shin-Osaka Central Tower South Building, 5-5-15 Nishinakajima, Yodogawa Ward, Osaka City, Osaka 532-0011
View more details on Google Map >
Chu-shikoku Sales Office 5th floor of Iyogin Hiroshima Building, 1-1-20 Kamiya Town, Naka Ward, Hiroshima City, Hiroshima Prefecture 730-0031
View more details on Google Map >
Kyushu Sales Office 4th floor of City 22 Building, 3-23-22 Hakataekimae, Hakata Ward, Fukuoka City, Fukuoka Prefecture 812-0011
View more details on Google Map >
Chain Trouble Shooter