Company History

January 1956
Began plastic molding processing in Kitasenzoku, Oota-ku as a private enterprise.
July 1961
Changed to a corporate organization with a capital of 2 million yen and named it as Koryo Plastics Industry Co., Ltd.
February 1964
Built a Saitama plant in Koshigaya City, Saitama Prefecture.
March 1969
Established Kyushu Koryo Plastics Industry Co., Ltd. in kaho-gun Inatsuki-machi,Fukuoka Prefecture. (Capital: 10 million yen)
January 1970
Increased the capital of Koryo Plastics Industry Co., Ltd. to 10 million yen.
March 1973
Built the Gunma plant in Itakura-machi Oura-gun, Gunma Prefecture.
June 1973
Established Ryoko Kako Co., Ltd. (Capital: 7 million yen)
March 1984
Increased the capital of Koryo Plastics Industry Co., Ltd. to 50 million yen.
March 1987
Renamed Gunma plant as Kanto Koryo Co., Ltd. and established it with capital 30 million yen.
October 1988
Built the Koriyama plant of Ryoko Kako Co., Ltd. in Koriyama City, Fukushima Prefecture.
September 1990
Newly increased the capital of Kyushu Koryo Plastics Industry Co., Ltd. to 50 million yen.
October 1991
Renamed Koriyama plant of Ryoko Kako Co., Ltd. as Tohoku Koryo Co., Ltd. and established it with capital 10 million yen.
June 2001
Established Koryo (Thailand) Co., Ltd. in Bangkok City (Lat Krabang). (Capital: 27 million baht)
September 2004
Built headquarter (Koshigaya) plant.
March 2005
Koryo Plastics Industry Co., Ltd. merged with Kyushu Koryo Plastics Industry Co., Ltd.
and formed Koryo Plastics Industry Co., Ltd. with capital 60 million yen.
Kyushu Koryo Plastics Industry Co., Ltd. became Koryo Plastics Industry Co., Ltd. Kyushu Plant.
April 2005
Koryo Plastics Industry Co., Ltd. Kyushu Plant acquired ISO9001.
October 2005
Koryo (Thailand) Co., Ltd. moved to Amata Nakorn Industrial Estate in Chonburi Prefecture from Bangkok City (Lat Krabang). (BOI authorized plant)
January 2007
Koryo (Thailand) Co., Ltd. acquired ISO9001.
March 2007
Completed cleanroom renovation of Koryo (Thailand) plant.
December 2011
Completed building of new Kanto Koryo Co., Ltd. blow molding plant (cleanroom). Renovated injection molding plant.
January 2012
Completed cleanroom renovation of Koryo Plastics Industry Co., Ltd. head plant.
March 2012
Kanto Koryo Co., Ltd. merged with Koryo Plastics Industry Co., Ltd. and formed Koryo Plastics Industry Co., Ltd. Gunma Plant.
October 2012
Increased the capital of Koryo (Thailand) Co., Ltd. to 54 million baht (About 170million yen).
February 2014
50th anniversary of founding.
December 2014
Koryo (Thailand) Co., Ltd. acquired TS16949.
May 2015
Koryo (Thailand) Co., Ltd. Commenced operation of mold base manufacturing division.
June 2015
Tohoku Koryo Co., Ltd. Commenced automotive parts assembly for Tohoku region.