Tokyo Air Conditioning Hygiene Industry Association

Established the Tokyo Heating Hygiene Construction Association (abbreviated as Warm Hygiene Association) by adding a hygiene construction division to the Tokyo Heating Association founded in the early Showa period.

Added "Cold" to the association name, renaming it the Tokyo Heating and Cooling Hygiene Construction Association.

Merged the Warm Hygiene Association with the Equipment Management Research Association to form the Tokyo Air Conditioning Hygiene Construction Association (abbreviated Tokyo Air Hygiene Association).

Received permission from the Governor of Tokyo to become a "Society".

Constructed the "Tokyo Air Hygiene Hall" at Shintomi 2-chome, Chuo-ku, and opened a new office for the association.

Completely revised the articles of incorporation and significantly changed the committee organization.

Received approval from the Governor of Tokyo to transition to a "General Incorporated Association" in line with the public corporation system reform. (Details: here: )

Renamed the association to General Incorporated Association Tokyo Air Conditioning Hygiene Industry Association.