| 22. Aug, 2016 | Notice of merge. |
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| 15. Dec, 2015 | Basic policy of Specific Personal Information was established. |
| 14. Feb, 2014 | We renewed our web site. |
| 24. Jan, 2014 | We renewed our web site. |
| 1. Apr, 2011 | We integrated Paper department into Industrial Materials department. |
| 26. Mar, 2010 | We held our 70th anniversary. |
| 1. Apr, 2009 | Head office moved to 2-30-8, Ningyocho, Nihonbashi, Chuo-ku, TOKYO.
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