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1965
Established as a 50-50 joint venture between EESA (an affiliate of SEL-REX Corporation) and TANAKA PRECIOUS METALS
Opened an office at TANAKA PRECIOUS METALS' Hiratsuka Plant No. 2 and commenced the production and sales of Sel-Rex plating solutions and plating equipment
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1973
Completed Hiratsuka Office and relocated plant to current address
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1976
Entered into a technical support agreement with Heesung Metal Ltd. of South Korea
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1981
Entered into a technical support agreement with Alpha Metals in the United States
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1983
Completed Building B at Hiratsuka Office
Opened Tokyo Office
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1984
Established Electroplating Engineers Taiwan Limited (EETA) as a 50:50 joint venture with Yu Chiao Metal Finishing Co., Ltd. in Taiwan
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1987
Established Alent Japan Company as a joint venture with Cookson Japan K.K.
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1992
Established Electroplating Equipments S.A. (EESA) in Switzerland as a joint venture with Enthone-OMI (Netherlands) and two other companies
Transferred EETA shares to Yu Chiao Metal Finishing Co., Ltd.
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1993
Relocated Tokyo Office to Yokohama Sales Office
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1996
Established EEJA America Inc. in San Jose, California, USA as a local subsidiary
Obtained ISO 9001 certification
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1999
Relocated Yokohama Sales Office to Hiratsuka Office
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2000
Opened Technical Support Center (TSC) at Hsinchu Plant of Taiwan TANAKA Kikinzoku Kogyo Co., Ltd.
Obtained ISO 14001 certification
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2001
Opened MS Office in Yokohama
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2002
Integrated MS Office into Hiratsuka Office
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2004
Relocated EEJA America Inc. to Morgan Hill, California and opened Silicon Valley Laboratory at the facility
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2005
Obtained integrated certification for OHSAS 18001 and ISO 14001
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2006
Relocated Taiwan TSC to the Hukou Plant of Taiwan TANAKA Kikinzoku Kogyo and expanded it as the Hsinchu Laboratory (outsourced laboratory)
Opened Incheon Laboratory and Seoul Laboratory in South Korea (outsourced laboratories)
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2009
Relocated Incheon Laboratory in South Korea from Namdong to Dohwa and expanded the facility
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2015
Established EEJA (SHANGHAI) Co., Ltd. as a local subsidiary in Shanghai, China
Transferred all EEJA America Inc. shares to TANAKA PRECIOUS METALS
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2016
EEJA (SHANGHAI) Co., Ltd. obtained ISO 9001 certification
TANAKA PRECIOUS METALS acquired all shares in Metalor Technologies SA
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2018
TANAKA PRECIOUS METALS acquired all EEJA shares held by Alent Holdings B.V. (50% equity stake), making EEJA a wholly-owned subsidiary of TANAKA PRECIOUS METALS
Obtained integrated certification for ISO 9001, ISO 14001, and OHSAS 18001
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2019
TANAKA PRECIOUS METALS acquired all shares in Metalor Technologies (Japan) Corporation from Metalor Technologies SA
Consolidated the equipment business into Mitomo Semicon Engineering Co., Ltd. (currently EEJA Technologies Ltd.)
Migrated from OHSAS 18001 to ISO 45001
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2020
Integrated the surface treatment business of Metalor Technologies (Japan) into EEJA and transferred manufacturing operations from the Metalor Numazu Plant to EEJA
Completed construction of Building No. 1 at Hiratsuka Office
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2021
Acquired all shares in Mitomo Semicon Engineering Co., Ltd. (currently EEJA Technologies Ltd.)
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2022
Electroplating Engineers of Japan, Limited changed its name to EEJA Ltd.
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2023
Transferred the operations of EEJA (SHANGHAI) Co., Ltd. to Metalor Technologies (Suzhou) Ltd.
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2026
Relocated the Silicon Valley Laboratory to Metalor North Attleboro
