| 1957 | Founded Kenko Co.,Ltd. |
|---|---|
| 1974 | Kenko Optical Co., Ltd. was founded as an affiliate for the purpose of manufacturing optical products. |
| 1980 | The Product Center was completed and opened in Miyoshi-cho, Saitama Prefecture. |
| 1981 | Capital was increased to 50 million Japanese yen. |
| 1989 | Koei Seiki Co., Ltd. was purchased and it started operations as an affiliate. |
| 1989 | Philippine Kenko Corporation was established in Mactan. |
| 1992 | Capital was increased to 100 million Japanese yen. |
| 1993 | Kenko invested capital in T.H.K. Photo Products Inc. (USA) |
| 1997 | Asiaoptical Co., Ltd. was purchased and it started operations as an affiliate. |
| 1997 | Relocated the Head Office to Shinjuku-ku, Tokyo. |
| 1998 | TASCO JAPAN Co. was purchased and it started operations as an affiliate. |
| 2000 | Philippines Sakurai Plastic was purchased and it started operations as an affiliate. |
| 2001 | SLIK Corporation was purchased and it started operations as an affiliate. |
| 2002 | Relocated the Product Center to Hidaka-shi, Saitama Prefecture due to business expansion. |
| 2005 | Founded Shanghai KTS Co., Ltd. |
| 2006 | Founded Kenko Professional Imaging Co., Ltd. |
| 2007 | ASKA was purchased and it started operations as an affiliate. |
| 2008 | Fujimoto Photo Industrial was purchased and it started operations as an affiliate. |
| 2011 | Kenko merged with Tokina, and the company name has changed to Kenko Tokina Co., Ltd. |
