|1870||Origin of Mitsubishi (Tsukumo Shokai)|
|1884||Foundation of Mitsubishi (Mitsubishi-sha, Ltd.)|
|1908||Start of manufacturing of 1st Steam turbine|
|1917||Start of manufacturing of 1st Compressor|
|1944||Inauguration of Hiroshima Engine Works and Hiroshima Shipyard|
|1986||Start of sales of Mitsubishi Advanced Compressor "MAC"|
|1988||Inauguration of MHI Turbo-Techno Co. for the after-sales service business|
|2000||Consolidation of 3 compressor business operation units of Takasago, Nagasaki and Yokohama into Hiroshima Works|
|2010||Establishment of Mitsubishi Heavy Industries Compressor Corporation (MCO), as Strategic Business Unit (SBU) for Compressor of MHI Group|
|2011||Establishment of MCO Saudi Arabia, LLC (MCOSA) in KSA|
|2012||Establishment of MHI Compressor International Corporation (MCO-I) in USA|
|2015||Start of MCO-I Houston Works at Pearland, TX.
*/MCO-I name is changed as "Mitsubishi Heavy Industries Compressor International Corporation"
|2016||Establishment of MHI Compressor do Brasil Ltda. (MCO-B) in Brazil|
|2018||Establishment of MHI Compressor Korea Ltd. (MCO-K) in South Korea.|