| 1956 | Established Nissin Seiko Corporation in Shibuya-ku, Tokyo for development and manufacturing of hektgraph 「296-H」 Founder Juko SHIMA, President Inosuke HARA |
|---|---|
| 1959 | Changed company name to Duplo Seizo Corporation "Duplo" originated from "Duplicator" |
| 1960 | Relocated head office to Komae-shi, Tokyo |
| 1962 | Made investment in establishment of Duplo Co., Ltd. (Fuoka-shi, Fukuoka) |
| 1964 | Made investment in Duplo Co., Ltd. (Osaka-shi, Osaka) |
| 1972 | Made investment in establishment of Duplo Taiwan Corporation (Taipei, Taiwan) |
| 1973 | Made investment in establishment of Duplo Seiko Corporation (Kinokawa-shi, Wakayama) |
| 1979 | Made investment in establishment of Duplo USA Corporation (California, USA) |
| 1980 | Tadayoshi ASANO became president |
| 1983 | Made investment in Duplo Manufacturing Corporation Korea Limited (Seoul, Korea) |
| 1984 | Completion of Atsugi Office |
| 1988 | Made investment in Duplo Holdings ( UK, current Duplo International Limited ) |
| 1989 | Completion of Wakayama Office |
| 1990 | Changed company name to Duplo Corporation Setsuo SHIMIZU became president |
| 1991 | Completed the second construction of Wakayama office Opened Atsugi distribution center |
| 1992 | Made investment in Duplo Co., Ltd. (Takamatsu-shi, Kagawa) |
| 1994 | Made investment in establishment of Duplo Co., Ltd. (Toshima-ku, Tokyo) |
| 1997 | Obtained ISO9001 certification Made investment in Duplo (Thailand) Limited (Bangkok, Thailand) |
| 2000 | Tokio SAKAMOTO became president |
| 2003 | Relocated head office to Sagamihara-shi, Kanagawa Consolidated Atsugi office and Atsugi distribution center into head office |
| 2004 | Formed capital ties with Asia Stencil Paper Co., Ltd. Obtained ISO14001 certification |
| 2006 | Duplo Group International Limited (UK, current Duplo International Limited) |
| 2007 | Subsidize Duplo Co., Ltd. (Fukuoka) Subsidize Duplo Manpaku Co., Ltd (Sapporo-shi, Hokkaido) |
| 2008 | Renewed brand mark and company logo |
| 2009 | Subsidize Duplo Towa Co., Ltd. |
| 2010 | Established Duplo Hong Kong Limited (Hong Kong) |
| 2011 | Established Duplo Telemarketing Service Corporation (Yokohama-shi, Kanagawa) |
| 2012 | Established Duplo Zhongshan Limited (Factory in China) Established Duplo Vietnam Company Limited (Vietnam) |
| 2017 | Kiyoto AKAISHIZAWA was appointed to the presidency Obtained ISO27001 certification |
| 2022 | Hideo TANAKA was appointed to the presidency |
