Mitsubishi Heavy Industries Thermal Systems Co., Ltd.

The founding of Mitsubishi Heavy Industries dates back to the late Meiji era, specifically to 1884 (Meiji 17). The first president was Yataro Iwasaki. The government leased the Nagasaki Shipbuilding Bureau of the Ministry of Public Works, which was renamed Nagasaki Shipyard, and officially started shipbuilding operations. This shipbuilding business was later succeeded by Mitsubishi Shipbuilding Co., Ltd. and grew significantly.

In 1910 (Meiji 43), it adopted the current 'Three Diamonds' mark.

In 1934 (Showa 9), the company expanded to include ships, heavy machinery, aircraft, and railway vehicles, and changed its name to Mitsubishi Heavy Industries, Ltd., marking a new start.

After World War II, in 1950 (Showa 25), following the Law for the Disposition of Excess Economic Power aimed at dismantling conglomerates, the company was temporarily divided into three companies: West Japan Heavy Industries Co., Ltd., Central Japan Heavy Industries Co., Ltd., and East Japan Heavy Industries Co., Ltd.

In 1964 (Showa 39), these three companies merged to form the new Mitsubishi Heavy Industries, Ltd.

In 1970 (Showa 45), the automobile division became independent and was established as Mitsubishi Motors Corporation, which manufactures and sells automobiles.