Dai-Dan Co., Ltd.

Dai-Dan is an integrated building-services engineering and construction company. Its defining feature is the combination of light (electrical), air (air conditioning), and water (plumbing and sanitary systems), together with ZEB and other next-generation building systems. Since its founding in 1933, the company has built its business around the design and construction of electrical, air-conditioning, and plumbing and sanitary systems, and has expanded into information and communications systems, ZEB (zero-energy buildings), regenerative-medicine environments, and other next-generation building systems. In short, it is a comprehensive building-services company that covers a building's light, air, and water needs.