|1919||At the time "Bauhaus" opened in Germany, "IZUMIYA Artists' Supply Store" was also established in Shibuya, Tokyo.|
|1945||After a temporary close down affected by war, business was back to operations in Ikebukuro, Tokyo.|
|1950||The new company name became "Izumiya Limited."|
|1952||Establishment of trade and sales department. Introduced the latest Western design trends.|
|1961||Commenced importing "Industrial Clays."|
|1970||Reorganization of company into "Izumiya Corporation."|
|1972||Famous Detroit automotive modeler Ron Martin, invited for a clay modeling seminar. With his help, clay modeling techniques became popular in Japan.|
|1981||Commenced domestic production of "Industrial Clay J-525."|
|1986||Developed "Clay Modeling Film" and released.|
|1987||Developed design marker "Copic" and released.|
|1992||Izumiya Corporation changed its name to "Too Corporation." Started corporate identity implementation.|
|1998||Developed "Clay Modeling Check Foil" and released.|
|1999||Sales department for art supplies, clay, educational materials, equipment, design and modeling materials grouped up into an organization and separated from Too Corporation as a new entity "TOOLS Corporation."|
|2002||100% sulfur-less "Industrial Clay NS" series developed and released. Adopted by world-wide automotive manufacturers for use in model studios.
Developed "Clay Modeling Sheet" and released.
|2003||Developed "Ellipse Curves 10pcs/set" and released.
Developed "Curves 3pcs/set" and released.
|2004||Developed "PM Pad A3 Standard" and released.|
|2005||Published "Marker Sketch Design Book" and released.|
|2006||Developed "Ellipse Curves Standard" and released.|
|2007||Developed "Clay Warmer PU-01" and released.|
|2008||Developed "Chrome Silver" and released.
Developed "Clay Shaper NSD-120" and released.
Developed "Marker Sketch Design DVD Vol.1" and released.
Developed "Marker Sketch Pad A3 Standard" and released.
|2009||International sales department for selling clays, modeling materials, equipment, educational materials for automotive design separated from TOOLS Corporation. This entity became the "TOOLS INTERNATIONAL Corporation."|
|2010||Developed "Modeling Table MT01" and released.
Developed "Marker Sketch Design DVD Vol.2" and released.
|2011||Company HQ moved to Edogawa-ku, Rinkai-cho, Tokyo.|
|2012||Published "The Basic Techniques of Clay Modeling" and released.
Developed "Marker Sketch Pad A4 Standard" and released.
|2013||"Industrial Clay (Vacuum-Packed)" released.
Developed "NS Clay Tape" and released.
|2016||Company HQ moved to Minato-ku, Toranomon, Tokyo.|