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Our History
1947
Foundation of Kyowa Chemical.
1950
Start of Magnesium Oxide and Magnesium Hydroxide production.
1952
Establishment of Kyowa Chemical Industry Co., Ltd.
1956
Opening of Yashima Plant and Tokyo Office.
1957
Start of Dried aluminum hydroxide gel production .
1960
Opening of Sakaide Plant.
1965
Share Capital increased to JPY 80,000,000.-
1970
The world’s first industrial synthesis of Hydrotalcite .
1977
Start of DHT-4A™ production, a halogen scavenger for polyolefins and other plastics.
1981
Start of ALCAMIZER™ production, a heat stabilizer for PVC.
1982
Start of KISUMA™ 5 production, an inorganic flame retardant.
1990
Share Capital increased to JPY 144,000,000.-
1992
Opening of new R&D center in Sakaide.
1998
ISO 9002 qualified (Sakaide Plant).
1999
Initiation of production at Kisuma Chemicals B.V. , the Netherlands.
2002
Sakaide Plant receives ISO 14001 qualification (Sakaide Plant).Magmitt™ started.
2003
Sakaide Plant ISO 9001 qualified (Sakaide Plant).
2005
Establishment of Pharmaceuticals Division.
2006
Yashima Plant receives ISO 14001 qualification (Yashima Plant).
2007
Operation of facilities at Pharmaceutical Division commenced.
2009
Operation of Dandong Songyuan Chemicals Co., Ltd. (China) commenced.
2012
Opening of Sakaide Second Plant.
2014
KISUMA AMERICAS INC. opened in the United States of America.KISUMA ASIA SINGAPORE PTE. LTD. opened in Singapore.
2016
KISUMA CHEMICAL TRADING (SHANGHAI) CO., LTD. opened in China.
2017
Kisuma Food Service Co., Ltd. opened in Japan.
2021
Dandong Songyuan Chemicals Co., Ltd. : Changed its corporate name to Kisuma (Dandong) Advanced Materials Tech. Co., Ltd.
2022
SETOLAS Holdings, Inc. and Magmitt Pharmaceutical Co., Ltd. are established following the organizational reconstruction of Kyowa Chemical Industry Co., Ltd.
