Started as the Shibaura Works of Ohte-Shokai K.K., an automobile sales company, which was a subsidiary of Mitsubishi Shipbuilding Co.,LTD., the predecessor of the present Mitsubishi Heavy Industries, Ltd. (MHI).
The Sibaura Works was taken over by Mitsubishi Internal Combustion Engine Mfg. Co., Ltd. and became the shibaura Plant of the Nagoya Machinery Works.
The plant was moved to Oi (renamed the Oi Plant) and began trial manufacture of high-speed diesel engines and tanks.
Established the Maruko Plant, which is the present Tokyo Motor Vehicle Works of Mitsubishi Motors Corp. (MMC), for mass production of automobiles.
Designated by the army as a factory specializing in the production of tanks, and continued as such until the end of World War II.
Converted to the production of consumer goods, including tractors for agricultural use.
The Maruko Plant began repair of engines and equipment used for trucks and jeeps for U. S. Forces, while the Oi Plant continued to produce consumer goods.
The Tokyo Machinery Works of East Japan Heavy-Industries, Ltd.was created when Mitubishi Heavy Industries was decentralized into three independent companies.
Renamed Mitsubishi Nippon Heavy-Industries,Ltd.
Began to produce additional consumer goods, including construction machinery such as tractors, motor graders, and high-speed diesel engines for industrial and marine use, as well as special vehicles and tanks.
The three independent companies of Mitsubishi Heavy Industries decentralized in 1950 were merged again into one company under the present name and the works was renamed the Tokyo Machinery Works.
Completed construcion of the Sagamihara Plant and commenced operations at its No. 1 Plant
Established the Chitose Plant in Chitose city at the Hokkaido service base for vehicles and machinery
Commenced mass production of the Type 90 Main Battle Tank
Commenced local production of turbochargers at MHI Equipment Europe B.V. in the Netherlands
Entered into a joint venture with Caterpillar Inc. to form Mitsubishi Caterpillar Forklift America, Inc. in the United States, Mitsubishi Caterpillar Forklift Europe B.V. in the Netherlands, and Mitsubishi Caterpillar Forklift Asia Pte. Ltd. in Singapore, and commenced local production of forklift trucks in the U.S. and the Netherlands
Established Shanghai MHI Turbocharger Co., Ltd. as a turbocharger manufacturer in China
Established MHI Equipment Alsace S.A.S as a Mid-High Speed Engine manufacturer in France
Established MHI Engine System Asia Pte. Ltd. as a power generation system manufacturer and service provider in Singapore
Established MHI-VST Diesel Engines Pvt. Ltd. as a small engine manufacturer in India
Established Mitsubishi Turbocharger Asia Co., Ltd. as a turbocharger manufacturer in Thailand
Established Mitsubishi Heavy Industries Forklift (Dalian) Co., Ltd. as a forklift manufacturer in China
Began operating the No. 3 Plant as a dedicated turbocharger factory
Commenced mass production of the Type 10 Main Battle Tank
Established Shanghai MHI Engine Co., Ltd. as an engine manufacturer in China
Split off the forklift division of Mitsubishi Heavy Industries, Ltd. and established Mitsubishi Nichiyu Forklift Co., Ltd. through a merger with Nippon Yusoki Co., Ltd.
Split off the engine division and turbocharger division of Mitsubishi Heavy Industries Engine & Turbocharger, Ltd.