| 1907 | HOWA was established as Toyoda's Loom Works, Ltd. for manufacture and sales of Toyoda looms.
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| 1916 | Commenced manufacture of spinning machinery.
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| 1935 | Commenced manufacturing of cast steel.
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| 1936 | Established Showa Heavy Industries, Ltd. Commenced manufacturing and selling of machine tools.
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| 1941 | Completed merger with Showa Heavy Industries, Ltd. and renamed HOWA Heavy Industries, Ltd.
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| 1945 | Renamed as HOWA MACHINERY, LTD.
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| 1952 | Commenced manufacturing air chucks and pneumatic equipment.
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| 1964 | Commenced manufacturing floor scrubber. |
| | Type 64 rifle and 81mm type 64 mortar adopted as official equipment by the Japan Defense Agency(currently known as Ministry of Defense).
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| 1965 | Commenced manufacturing aluminum sound-proof windows.
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| 1977 | HOWA sound-proof window was the first in Japan to receive authorization to display the JIS symbol.
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| 1983 | Commenced manufacturing rodless cylinders.
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| 1995 | Established HOWA MACHINERY SINGAPORE PTE LTD. |
| | Commenced selling machine tools in Singapore.
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| 1998 | Acquired ISO 9001 certification in compact machining center division.
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| 1999 | Established H.O. ENGINEERING CO., LTD. |
| | Branched into remodeling and repair field of machine tools.
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| 2000 | Commenced manufacturing vertical double-sided exposure systems for printed circuit boards. |
| | Acquired ISO 9001 certification in machine tool accessories division and firearms division.
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| 2001 | The Rodless cylinder ORC10 received Good Design Prize.
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| 2002 | Commenced manufacturing street sweeper on CNG vehicle. |
| | Acquired ISO 9001 certification in machinery department.
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| 2007 | Acquired ISO 14001 certification in Head Office and Main Plant. |
