| 1905 | Benji Kaji founded the company to manufacture textile machines in Sakuragawa-cho, Osaka. |
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| 1914 | Moved the company to Sanpo-cho, Sakai. |
| 1934 | Reorganized the company as a joint-stock corporation. Started trial manufacture and research of air compressors. |
| 1950 | Marubeni Corporation took a stake in the company. |
| 1958 | Started manufacturing oil-free compressors. Opened the Tokyo Office (currently Tokyo Branch). |
| 1962 | “EAGLE” air compressor became the model subject of JIS. Went public. Listed in the Second Division of the Osaka Securities Exchange. |
| 1963 | Capital: JPY240,000,000 Completed the first domestically produced model of the Kaji Charpentier-type tire cord direct yarn twisting machine. |
| 1964 | Completed the construction of the Mihara Plant. Move the head office to Mihara-cho (currently Mihara-ku, Sakai). |
| 1966 | Modified the lubricated-trunk-piston type compressor. |
| 1968 | Acquired a business site for testing and manufacture certified under the High-pressure Gas Safety Law. |
| 1969 | Manufactured the first model of a SF6 gas recovery unit. Developed a high-speed double-yarn twisting machine for spun yarn, [NTK-15]. |
| 1970 | Developed a high-speed piled-yarn twisting machine, [D-140]. Developed a high-speed double-yarn twisting machine for worsted yarn, [HIT-MAC-10]. Developed an ultrahigh pressure (1000 kg/cm2) compressor. Serialized the oil-free compressor. |
| 1972 | Developed a tire cord direct yarn twisting machine, [D.T.Cabler]. |
| 1973 | Serialized a high-pressure (110 kg/cm2) oil-free compressor. |
| 1974 | Delivered the first model of an oil-free gas compressor. |
| 1980 | Introduced an electric furnace into the casting plant. Installed an automated molding line. Obtained licensing as a construction business under the Building Industry Law (General 55-55307). |
| 1985 | Delivered compressors to a nuclear power station. Obtained licensing for welding procedures under the Gas Business Act. |
| 1986 | Expanded the scope of test and manufacture certification (to complex equipment) under the High-pressure Gas Safety Law. Obtained licensing for welding procedures under the Electric Utility Law. |
| 1987 | Obtained licensing for welding procedures under regulations on nuclear fuel materials, fuel materials and nuclear reactors. |
| 1991 | Capital: JPY1, 440, 000,000 Changed the name of the company from “Kaji Iron Works Co., Ltd.” to “Kaji Technology Corporation”. |
| 1993 | Constructed a stainless steel welding plant. Developed a DC2000-type tire cord direct yarn twisting machine. Developed a large-scale yarn twisting machine for glass fiber. |
| 1994 | Opened a service center. |
| 1997 | Acquired ISO 9001 certificate. |
| 1999 | Developed a CNG oil-less compressor. |
| 2000 | Acquired ISO 14001 certificate. Opened the Osaka Branch. |
| 2003 | Opened the natural gas refueling station, “KAJI ECO STATION”. |
| 2004 | Developed a ultrahigh pressure (110 MPa) hydrogen gas air-cooled oil-less piston compressor. |
| 2005 | 100th anniversary of foundation |
| 2007 | Delivered an ultrahigh pressure (40MPa) hydrogen gas compressor to the fuel cell refueling station in front of Osaka Prefectural Head Office. |
| 2010 | Developed a large-size horizonal balanced-opposed compressor. |
| 2014 | Sales start of 82MPa full-stage hydrogen compressor “ HyKom340 “for fuel cell refueling station. |
| 2015 | Start of capital and business alliance with Mitsui Engineering & Shipbuilding Co., Ltd.(current:Mitsui E&S Holdings Co., Ltd.) Integrating the Osaka branch office to headquarters. |
