|September 1964|| Takaroku Shoji Co. Ltd.
Established in Higashi Nippori 3-chome, Arakawa-ku, Tokyo. Rokuzo Takahashi assumes the position of the first president.
In the same year, the Kawaguchi Factory was set up in Ankou, Kawaguchi City, as a dedicated factory for coloring.
|June 1971||Established Kandatsu Factory within Heisei Polymer Co., Ltd.|
|June 1971||Established Osaka branch in Tennoji Ward.|
|July 1977||Established Jonan Sales Office in Shinagawa-ku, Tokyo.|
|August 1985||Mr. Gensaku Takahashi appointed as president.|
|October 1986||Relocated the Head Office to the newly-built Takaroku Shoji Building in Arakawa-ku, Tokyo.|
|August 1987||Seven companies invested in Takaroku Shoji Co. Ltd.: Japan Polyolefins Corporation, Nippon A&L Inc., DIC Corporation, Denka Company Limited, Maruzen Petrochemical Co., Ltd., Plas-tech Corporation, Mitsubishi Gas Chemical Company Inc.|
|December 1988||Established West Kanto Sales Office in Kokubunji, Tokyo.|
|January 1990||Opened Kyoto Sales Office in Fushimi-ku, Kyoto.|
|July 1990||Established North Kanto Factory in Otone Toyodai Techno Town, Saitama Prefecture.|
|March 1992||Opened the North Kanto Sales Office in the North Kanto Factory.|
|July 1996||Opened Indian Office in Mumbai.|
|December 1999||Osaka Branch relocated to purchased premises at the Takaroku Osaka Building in Nishi-ku, Osaka Prefecture.|
|March 2000||Established East Kanto Sales Office in Chiba City.|
|May 2001||Opened Hong Kong Sales Office.|
|July 2002||Opened Tianjin Sales Office.|
|May 2003||The Kyoto Sales Office was closed and integrated into the Osaka Branch.|
|August 2003||Tianjin Factory completed.|
|April 2004||Opened Shanghai Sales Office.|
|October 2005||West Kanto Sales Office and Jonan Sales Office were merged, and South Kanto Sales Office was opened in the Takaroku Dai-san Building in Machida City, Tokyo.|
|July 2007||Head Office relocated to purchased premises at 6F Station Port Tower Building in Arakawa-ku.
The East Kanto Sales Office was also integrated as the Head Office Sales Department.
Established Takapura Recycle Corporation in Nasu-gun, Tochigi Prefecture.
|October 2008||Opened Kyushu Sales Office in Chikushino City, Fukuoka Prefecture.|
|April 2011||Invested in Hinomaru Synthetic Plastic Industry Co., Ltd. and transferred it to the Takaroku Shoji Group.|
|August 2011||Established Takaroku Plastics Co., Ltd. in Taiwan.|
|July 2012||The coloring business of the Kawaguchi Factory was consolidated at the Kita Kanto Factory, and the Kawaguchi Factory was converted to the Koroku Shoji Logistics Center.|
|September 2013||Opened Nagoya Sales Office|
|April 2014||Opened Detroit Branch in the United States.|
|November 2016||Shunsaku Takahashi became president.|
|August 2019||Shunsaku Takahashi became CEO.|