Oct 1977 HOYO Harness Industry Co., Ltd. established
Oct 1984 Changed company name to HOYO SEIKO Co., Ltd.
May 1985 Start of plastic injection molding
Aug 1985 Expansion of head office factory
Apr 1987 Light shielding painting, putting printing technology from Canon to Oita Technology transfer
Jan 1988 Presentation of case at prefectural technology transfer presentation meeting
Apr 1988 Capital increased to 11.4 million yen
Nov 1988 Osoe factory new construction Molding / Automotive Parts Assy Relationship Relocation
Apr 1989 Capital increased to 16 million yen
Jun 1989 Oita Workplace opened
Nov 1989 Oita Prefecture Small Business Frontier Award Winner
Sep 1990 Oita factory new construction
Mar 1991 Coating Division OK Coating Established
Sep 1991 Capital increased to 20 million yen
Apr 1992 Established HOYO Service Co., Ltd.
Feb 1993 Capital increased to 30 million yen
Oct 1993 Established HOYO Engineering Co., Ltd.
Oct 1993 Capital increased to 50 million yen
Dec 1994 Oita Canon Inc. Quality Improvement Award
Nov 1995 HOYO Shoji founded limited company
Nov 1996 Oita factory video assembly building new construction
Feb 1997 Established HOYO Met Inc.
Apr 1998 Establishment of HOYO Enterprise Cooperative Association
Sep 2000 Nakatsu factory started operation
Nov 2000 Horizontal automatic insert molding technology introduction (For Nissan Motor Corporation)
Dec 2000 Shonai factory started operation
Aug 2000 Introduction of horizontal LPM technology (For Toyota Motor Corporation)
Aug 2002 Acquired ISO 9001
Sep 2003 Acquired ISO 14001
Apr 2004 Nakatsu factory closed down, integrated into HOYO Met
May 2004 New building of molding factory building of HOYO Met Ltd.
Apr 2005 Insight assembly is begun in the Canon Oita business establishment
Apr 2006 Introduction of aluminum vapor deposition technology (For Mazda Motor Corporation)
Oct 2006 Introduction of hot plate welding technology (For Mazda Motor Corporation)
Mar 2007 Capital increased to 60 million yen
May 2007 HOYO Met multicolored painting line Operation end
Aug 2009 Started production of "Fiber painted robot line" in-house developed
Apr 2010 Established Koyo Green Foods Co., Ltd.
Aug 2010 Establishment of Fukuoka factory(Asakura-gun, Fukuoka)
Sep 2010 Fukuoka factory started operations
Jul 2011 Establishment of Hubei HOYO Automobile Zero Parts Co., Ltd. (Yubeong City, Hubei province)
Mar 2013 Developed horizontal automatic insert molding machine at Osoe factory
Apr 2013 Construction of new head office building
Dec 2013 Establishment of Kitakyushu factory(Tagawa-gun, Fukuoka)
Apr 2014 HOYO Met Expansion of horizontal automatic insert molding machine
Oct 2014 Hubei HOYO Automobile Zero Parts ISO / TS 16949: 2009 certification acquired
Jan 2015 Started mass production at Kitakyushu factory "Fiber painting line"
Oct 2016 HOYO SEIKO 40th Anniversary
Sep 2017 Renovated Oita Hasama Plant V and started production of camera unit parts
Dec 2018 Close the Oita Shonai Plant and consolidate it into the Oita Hasama Plant
Dec 2018 Established in Fudian District, Wuhan City, Hubei Province, China, Wuhan HOYO Seiko Auto Parts Co., Ltd.
Jan 2019 HOYO Shoji completes a rental apartment "Verspah Minami Tateishi" (1 LDK, 20 units) in Beppu Minami Tateishi
Mar 2019 Increased capital to 70 million yen(Employee stock ownership)
May 2019 Constructed a shipping port (480㎡) for Toyota Motor Kyushu milk run at the Kitakyushu factory and started operation
Mar 2020 Increased capital to 72 million yen(Employee stock ownership)
Mar 2021 Increased capital to 88 million yen(Third-party allotment)