TAISEI CO., LTD. is a Japan-based company mainly engaged in the building maintenance business. The Company operates in five business segments. The Clean segment is engaged in the cleaning management for office buildings, hotels and other buildings. The Facility Management segment is involved in the operational management and maintenance of facilities, including electrical equipment, air conditioning equipment, water supply and drainage, as well as lifting equipment. The Security segment provides safety and security services. The Renewal segment is engaged in the repair work, as well as diagnosis, investigation, planning, design and construction work. The Real Estate Solution segment is engaged in the property management, designated manager and private finance initiative (PFI) businesses.