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Tokio Marine and
Fire Insurance Building (1918)
Most of the HVAC-related companies currently listed on the First Section of the Tokyo Stock Exchange were established in the first four decades of the 20th century. Each of these companies had a different background, which continues to shape their businesses today.
At the time of its founding in 1913, Kenzaisha (Taikisha) was involved primarily in importing heating systems, elevators and construction materials. In 1918, the Company installed an innovative hot water forced circulation system for all 7 stories of the Tokio Marine and Fire Insurance Building, Japan's first modern high-rise office building. Through this successful project, the Company gained recognition as a heating systems company with advanced design and construction capabilities, establishing a solid position in the industry.

The Shinko Rayon Factory, which ordered
an HVAC system from Kenzaisha (1936)
Beginning in 1930, modern buildings in Japan also incorporated air conditioning systems. In addition, with the development of the textile industry, the Company's installation of the HVAC systems essential to the production process in spinning factories increased sharply. The Company established an air conditioning systems division in 1934 to strengthen its ability to handle the growing volume of business from spinning factories. While guaranteeing high-quality construction for customers, the Company also reduced costs, and as a result achieved rapid growth in this field. In 1935, Kenzaisha added to its technological base by introducing a steam-jet refrigeration system.