| 1948 | Masanori Kozuka founded a textile factory in Hagiwara-cho, Ichinomiya, Aichi. |
| 1953 | The textile factory relocated to Bisai City (now part of Ichinomiya), Aichi. |
| 1959 | Kozuka Keori Co., Ltd. was established and moved the main office to Higashikaganoi, Enish, Ichinomiya, Aichi. |
| 1960 | The company transformed into a planning and production company in addition to manufacturing. |
| 1976 | The company began to use a new production style requiring outsourced production.
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| 1995 | Production of textiles at a factory in China began. |
| 2011 | The company entered a business partnership with Canale Co., Ltd to plan and sell high-quality tweed. |
| 2016 | Production at a factory in Taiwan began. |
| 2018 | The company entered a business partnership with OLTAS to develop and sale jersey knit. |
| 2019 | Production of original products at a factory in Vietnam began. |
| 2020 | The company started planning the sale of men’s apparel products and the launch of our original brand, EYCK. |
