- Jan 1948
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Established as Sankei Plating Kogyo Co., Ltd. in the Kita Ward of Tokyo with a capital of 180,000 yen
- Jul 1960
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New Toda Factory constructed in Toda City, Saitama Prefecture
- Sep 1960
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Company name changed to Sankei Giken Kogyo Co., Ltd.
- Mar 1964
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Introduced fully automatic plating equipment made by Udylite in the US in the Akabane Factory; developed the field of triple-nickel plating and succeeded in mass production
- Aug 1964
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Established Megumi Kogyo Co., Ltd. in Kita Ward in Tokyo (currently a consolidated subsidiary)
- May 1965
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New Hamamatsu Factory constructed in Hamamatsu City, Shizuoka Prefecture
- Oct 1968
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New Isesaki Factory constructed in Isesaki City, Gunma Prefecture
- Jun 1970
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Megumi Kogyo Co., Ltd transferred to Isesaki Factory
- Dec 1970
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New Ano Factory constructed in Ano City, Mie Prefecture
- May 1977
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Jiuhkei Industry Co., Ltd established in Kaohsiung, Republic of China (Taiwan) (currently a consolidated subsidiary)
- Aug 1980
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Corrosion-resistant Dacrotized factory added to the Ano Factory
- Mar 1983
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Plastic molding factory added to the Ano Factory
- May 1984
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New Gunma Plant constructed in Isesaki City, Gunma Prefecture
- Sep 1987
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Newman Technology, Inc. established in Ohio, US (currently a consolidated subsidiary)
- Sep 1992
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New research and development annex constructed in the Gunma Plant
- May 1996
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New plastic molding factory constructed in the Gunma Plant
- Aug 1997
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Machinery factory established in Ano Factory
- Sep 1997
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Gunma Plant achieved ISO9001 certification
- Dec 1997
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New coating factory established in Ano Factory
- Oct 1999
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New engineering factory established in Gunma Plant
- Dec 1999
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Newman Technology, South Carolina Inc. established in South Carolina, US (currently a consolidated subsidiary)
- Aug 2003
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Sankei Giken India Pvt. Ltd. established in Haryana, India (currently a consolidated subsidiary)
- Aug 2004
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Inherited Isesaki Factory from Megumi Kogyo Co., Ltd.
- Mar 2005
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Holding company Sankei Giken Holdings Co., Ltd. established
- Jul 2005
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Guangzhou Minhui Automobile Parts Co., Ltd. established in Guangzhou City in China
- Oct 2008
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New research and development facility constructed in Newman Technology Inc.
- Mar 2011
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PT Sankei Dharma Indonesia established in West Java, Indonesia
- Apr 2011
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Sankei Giken Changzhou Co., Ltd. established in Changzhou, China
- Sep 2011
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Wuhan Sankei Minth Automotive Parts Co., Ltd established in Wuhan, China (currently a consolidated subsidiary)
- Apr 2012
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Sankei Pragati Pvt. Ltd. established in Haryana, India
- Apr 2012
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Newman Technology of Alabama, Inc. established in Alabama, US (currently a consolidated subsidiary)
- Jun 2012
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Relocated to New Sankei Giken Changzhou Co., Ltd factory completed in Changzhou, China (currently a consolidated subsidiary)
- Sep 2012
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Completion of new factory in Akabane
- Oct 2012
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Equity participation in Fabest Corporation (currently a consolidated subsidiary)
- Jul 2013
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Site office for the establishment of the Sankei Giken Asia Development Center in Bangkok, Thailand, opened
- Feb 2014
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Established Sankei Summit (Thailand) Co., Ltd
- Apr 2015
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Completed new factory in Prachinburi Province, Thailand
- Feb 2016
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Established Newman Technology Mexicana S.A. de C.V. in Guanajuato, Mexico