| July 1982 |
Established as a consulting company for agriculture and environmental hygiene. (Name: Health-Agro Ltd., Head Office: Kanda Nishiki-cho, Tokyo) |
| June 1996 |
Company name changed from Health-Agro Ltd. to Summit Agro Ltd. |
| June 1999 |
Merged with Sumisho Speciality Chemicals International Co., Ltd., and, as the surviving company, became specialized in crop protection products and hygienic insecticides. |
| November 1999 |
Company name changed to Summit Agro International Ltd. |
| May 2001 |
Relocated Head Office to Harumi, Tokyo. |
| September 2001 |
Capital increased to 320 million yen. |
| February 2008 |
Advanced into the pet products market. |
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