June 1918 | Started medical products wholesale business |
October 1947 | Registered Kosakai Chemical Industry Co., Ltd. |
November 1960 | Relocated head office to Nihonbashimuromachi, dealt with food additives and food packing materials |
April 1971 | Established Osaka office |
October 1987 | Increased capital amount to 40million yen |
April 1991 | Established Shizuoka office |
September 2015 | Moved head office to Nihonbashitomizawacho |
June 2018 | 100th anniversary |
May 2023 | Established Fukuoka sub-office |