Business

Carrier-Related Business

In the Carrier-Related Business, the Group is engaged in the construction and maintenance of telecommunications equipment nationwide for NTT Group and New Common Carriers (NCCs), which are telecom carriers that entered the market after the liberalization of the telecommunications industry in the 1980s.

IT Solutions Business

COMSYS provides total solutions services in the IT field, handling everything from networks, servers, and storage to maintenance and operation, and software development.

Social System-Related Business

The Social System-Related Business includes the Infrastructure field, which involves the construction of social infrastructure such as underground cabling to replace utility poles, water supply and sewage systems, and gas supply lines, the Electric and Telecommunications facilities field, which involves the construction of electric and telecommunications facilities including roads, airports, and data centers, and the Renewable Energy field, which involves the construction of renewable energy facilities such as solar power plants.

The COMSYS Group, is engaged in business activities leveraging the brand power and advantages of each region, and working to expand its business. Specifically, the Group is working to enhance the structure of its Carrier-Related Business, and strengthening its collaborations in the IT Solutions and Social System-Related businesses.
The COMSYS Group will continue contributing to the resolution of various social issues by creating social infrastructure that supports affluent lifestyles.

Main business areas and business of major subsidiary groups

  • Nippon COMSYS Corporation
  • SANWA COMSYS Engineering Corporation
  • TOSYS Corporation
  • TSUKEN Corporation
  • NDS Co., Ltd.
  • SYSKEN Corporation
  • Hokuriku Denwa Kouji Co., Ltd.
  • COMSYS JOHO SYSTEM Corporation
COMSYS-Grp
Major subsidiary groups Main business area(s) Business
Carrier-Related Business IT Solutions Business Social System-Related Business
NTT Engineering Business NCC Engineering Business
Nationwide Large Small Large Large
Nationwide Medium
Shinetsu Medium Small Small Small
Hokkaido Medium Small Small Small
Tokai Medium Small Small Medium
Kyushu Medium Small Small Small
Hokuriku Small Small Small Small
Nationwide Small
*NCC = New Common Carrier
*The sizes of the business scale indicated by ● are approximately as follows. Large: ¥50 billion or more / Medium: ¥20.0 billion to less than ¥50.0 billion / Small: Less than ¥20.0 billion