Handy

Grass Group plans, finances, builds, operates, and maintains large-scale ground and roof-mounted photovoltaic systems. It provides briefing, tendering, financing, development, engineering, procurement and construction (EPC), and more. The company was founded in 1994 and is based in Tokyo, Japan.

Takebishi operates as a technology trading company that handles industrial electronic machinery and equipment. It provides industrial equipment systems, semiconductors, devices, social infrastructure, and more. It was founded in 1926 and is based in Kyoto, Japan.

Kurohime is an industrial waste disposal company. The company collects industrial waste such as rubble and concrete fragments generated from demolition work, crushes them, and then manufactures, sells, and delivers recycled crushed stone. The company supports resource recycling by returning waste transported from construction sites to urban development sites. The company was formerly known as Watanabe Construction Co., Ltd. The company was founded in 1970 and is based in Tokyo, Japan.

Arai is a business services firm that provides various surveying operations. Through the use of geographic information systems, it provides land and structure measurement services. Its clients are manufacturing companies, governments, and other companies that have a physical footprint. The company was formerly known as Arai Surveying System Co., Ltd. and changed its name to Arai Co., Ltd. in July 1990. It was founded in 1975 and is based in Fukushima, Japan.

Crassone specializes in the demolition of buildings. The platform enables customers to connect with and receive quotes from contractors, designers, real estate agents, and construction and renovation companies. It offers professional consulting services for demolition work. The company was founded in 2011 and is based in Tokyo, Japan.

Kiso-Jiban operates as a construction consulting service provider. The company offers field investigation, laboratory tests, geotechnical analysis, and instrumentation of soil and rock to detect underground risks that can cause natural disasters and fatal accidents during construction. It was founded in 1953 and is based in Tokyo, Japan.