ETS Holdings Co., Ltd. engages in the construction of transmission lines for power and telecommunication industries. It operates through the following segments: Electric Work, and Building Management and Cleaning. The Electric Work segment includes steel tower assembly, overhead wiring, and survey works for overhead transmission line; design and construction of electrical facility and telecommunication equipment; and expansion and renovation of wireless communication relay. The Building Management and Cleaning segment offers condominium management, building facility maintenance, administration services contract, building cleaning, and building equipment maintenance and management services. The company was founded by Zenuemon Kato, Hiroshi Kayama, and Jihei Yamato in February 1922 and is headquartered in Tokyo, Japan.