1993
| November: | November: Sunsho Pharmaceutical Co., Ltd. was founded in Shimizu-ku, Shizuoka. |
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1994
| August: | The subsidiary, Sun Capsule Co., Ltd., was founded. |
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| November: | The Kuzawa Factory was completed in Kuzawa, Fuji-shi, Shizuoka and began manufacturing soft capsules. |
1999
| April: | The Kuzawa Factory began manufacturing hard capsules. |
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2000
| November: | The Oiwa Factory was completed in Oiwa, Fujinomia-shi, Shizuoka and began manufacturing soft and hard capsules. |
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2003
| April: | The Kuzawa Factory began manufacturing seamless capsules. |
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2005
| January: | The Manno Factory was completed in Manno, Fujinomiya-shi, Shizuoka and began manufacturing plant-based soft capsules. |
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2006
| June: | The Oobuchi Factory was completed in Oobuchi, Fuji-shi, Shizuoka Prefecture and began manufacturing tablets. |
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2008
| March: | Takashi Kondo was appointed as Chairman and Representative Director. Kazuhiro Shijo was appointed as President and Representative Director. |
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2010
| March: | The new Head Office was completed in Oiwa, Fujinomiya-shi, Shizuoka. |
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2013
| January: | The Atsuhara Factory was completed in Atsuhara, Fuji-shi, Shizuoka. |
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| February: | The Atsuhara Factory acquired the license for operating a soft drink manufacturing business. |
2014
| June: | The Head Office was relocated to Atsuhara, Fuji-shi, Shizuoka. |
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| August: | Takashi Kondo resigned as Chairman and Representative Director. |
| December: | Merger of Sunsho Pharmaceutical and Sun Capsule. |
2015
| February: | Seiichiro Matsumura was appointed as Chairman, Representative Director and CEO. |
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2018
| May: | The Nanryo Factory was completed in Nanryo, Fujinomiya-shi, Shizuoka. The Oiwa Factory and The Manno Factory were relocated. |
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2019
| December: | Seiichiro Matsumura resigned as Chairman, President and Representative Director, and was appointed as Director. |
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2020
| January: | Yasuhiko Ishikawa was appointed as Chairman, Chief Executive Officer. |
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| September: | The ADC (Application Development Center) was opened in Oi, Shinagawa-ku, Tokyo. |
2022
| March: | Yasuhiko Ishikawa resigned as Chairman, Chief Executive Officer. |
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| April: | Row Imamura was appointed as Chief Executive Officer. |
| November: | The Innovation Center was opened in Nanryo, Fujinomiya-shi, Shizuoka. |
2023
| December: | Distribution Center was opened in Shimadacho, Fuji-shi, Shizuoka. |
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2024
| January: | Acquired Kamata Co., Ltd. as a subsidiary. |
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| April: | The Osaka Sales Office was relocated. |