| Date | Summary | 
|---|
| August 1970 | JESCO Co., LTD. established in Hoya City, Tokyo (now Nishitokyo City) | 
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| June 2004 | JESCO NSI Co., LTD. established | 
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| September 2004 | Business transferred due to demerger of JESCO Co., LTD. | 
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| September 2007 | Merged with JESCO CSE Co., Ltd. JESCO NSI Co., LTD. was the surviving company and the trade name changed to JESCO CNS Co., LTD. | 
|---|
| March 2010 | Osaka Office opened | 
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| November 2010 | Merged with JESCO AVM Co., Ltd. JESCO CNS Co., LTD. was the surviving company | 
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| April 2011 | Merged with JESCO NET Co., Ltd. Former JESCO NET became Nagoya Branch (now Nagoya Office) of JESCO CNS Co., LTD. | 
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| March 2012 | Fukuoka Office opened | 
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| September 2012 | Merged with JESCO INS Co., Ltd. JESCO CNS Co., LTD. was the surviving company | 
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| September 2012 | Tohoku Office opened | 
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| September 2016 | Merged with JESCO TMC Co., LTD. JESCO CNS Co., LTD. was the surviving company | 
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| September 2019 | Changed the name of JESCO CNS Co., LTD. to JESCO Co., LTD. | 
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| September 2023 | Changed the name of JESCO Co., LTD. to JESCO NETWORK SYSTEM Co., Ltd. | 
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