| 1970 May |  Founded Shin-Nippon Wex Co., Ltd. in Nagoya . |
|---|---|
| 1971 August | Built the first Plant in Nagoya |
| 1973 May | Opened Osaka Branch |
| 1976 August | Established Sanyo Wex Co., Ltd. in Okayama-ken |
| 1978 April | Built the Uniform Processing Plant in Nagoya |
| 1979 April | Added Hotel Linen Processing Plant in Nagoya |
| 1981 April | Opened Toyohashi Branch |
| 1982 July | Established Tokyo Headquarters |
| 1983 August | Built Shichijyo Office |
| 1984 January | Opened Fukuoka Office |
| 1985 July |  Built Hotel Linen Processing Plant(Tsutsumi plant) in Nagoya |
| Opened Keiji Office in Shiga-ken | |
| 1988 October | Built Uniform & Hotel Linen Processing Plant in Noda-shi (50km away from Central Tokyo) |
| 1989 May | Established Kansai Uniform & Hotel Linen Processing Plant in Osaka through acquisition of Seiwa Sangyo (presently Seiwa Wex Company) |
| 1990 January | Opened Yokohama Branch |
| September | Opened office in Chiba |
| 1991 July | Built Toyohashi Plant |
| 1992 January | Built Tsutsumi Dormitory |
| April | Opened Sapporo Branch |
| July | Joined the NPS Reseach Institute Established the WPS "Kaizen" Promoting Dept. |
| October | Opened Hachioji Office |
| November | Built Kyoto Plant |
| December |  Built Company Cottage in Kaida (Nagano Pref.) |
| 1994 April |  Built New Head office Building and Kiba Uniform Processing Plant in Nagoya |
| September | Took over Aoi Linen Service Company, an institutional linen supplier in Hamamatsu |
| 1998 February | Expanded Osaka Plant (Seiwa Wex) |
| March | Expanded Tokyo Plant in Noda-shi |
| April | Opened Nishikanto Office |
| 2000 February | Certified ISO9002 |
| October | Moved Osaka Branch |
| 2001 July |  Built Koto Office (plant) |
| November |  Established Yokohama Line Supply processing Plant through acquisition of Nippon Cleaning, a subsidiary of NYK. |
| Acquisition of Hakone Laundry Co.,Ltd.(presently Hakone Wex) | |
| 2002 March | Completed switch to ISO standards 2000 version (issued December 2000) |
| July | Integrated Nishikanto Office to Yokohama Branch |
| December | Certified ISO14001 |
| 2003 June |  Moved Tokyo Headquarters to current location |
| 2004 January | Built Shichijyo Plant in Nagoya |
| April | Integrated Keiji Office to Kyoto Branch Re-built Kyoto Plant and Branch Office |
| 2005 February | Rebuilt Hakone Plant (Hakone Wex) and renamed Hakone Landry Co.,Ltd. to Hakone WEX Co.,Ltd. |
| October | Certified RAL (German Quality Certification-RAL-GZ992-1,RAL-GZ992-3) by the German Quality Assurance Association for Professional Linen Care |
| 2007 August |  Established Chiba Wex Co., Ltd. |
| 2008 December |  Built Matsudo linen and uniform processing Plant (Chiba Wex) |
| 2009 January | Opened Sendai Branch |
| October | Moved Fukuoka Office |
| 2010 May |  Built the Osaka Plant No.2 (Seiwa Wex) |
| June | Moved and Built a new Plant (Sanyo Wex) |
| November | Certified RAL in Matsudo Plant(Chiba Wex) (German Quality Certification-RAL-GZ992-2) |
| 2011 June | Takeshi Hirose become chairman and Junpei Hirose appointed as president |
| 2012 March | Certified ISO22000 in Tokyo Plant,Matsudo Plant |
| December |  Built Gifu Plant |
| 2013 March | Business transfer from Nippon Wex Co.,Ltd. Established Toda Plant,Togane Plant,Utsunomiya Office,Kanagawa Depot |
| 2014 May | Moved Sapporo Office |
| November |  Moved Osaka Office |
| 2015 April | Opened Okinawa Office |
| October |  Expanded Tokyo Plant in Noda-shi |
| 2016 December | Established Asset World Wex Co., Ltd. in Thailand |
| 2017 March | Expanded Gifu Plant |
| 2018 July |  Expanded Togane Plant (Nippon Wex) |
| 2019 April | Expanded Okayama Plant (Sanyo Wex) |
| 2020 February | Acquired Edoya Linen Co.,Ltd. |
| 2020 April |  Built Isehara Plant |
| 2020 November |  Built Kyoto PlantNo.2 for hotels |
| 2022 September | Established Okinawa Linen Supply Co., Ltd. through acquisition of Okinawa Linen Service Co., Ltd. |
| 2022 October | Opened Hiroshima Office |
| 2022 November | Renamed Hamamatsu Depot to Hamamatsu Office with the addition of a sales department. |
| 2024 February | Established Kagoshima Wex Co., Ltd. through acquisition of Nankyu Iryo Co., Ltd.'s Hotel Linen Plant |
| 2024 September | Built Osaka PlantNo.3 for hotels |