List of Declarations and Certifications

Environmental management system

(June 2020)

Sites with certified systems among Showa Denko’s 16 plants and 14 affiliated companies (20 plants) in Japan and 22 affiliated companies outside the country:
 Operation siteYear of acquisitionCategory
Showa Denko K.K. Oita Complex 1998 ISO14001
Showa Denko K.K. Kawasaki Plant, Higashinagahara Plant
  • Kawasaki Plant
  • Higashinagahara Plant
  • Kawasaki Unit, Institute for Integrated Product Development
  • Carbon Group, Institute for Integrated Product Development
  • Flow battery Group, Institute for Integrated Product Development
  • Green Project, Institute for Integrated Product Development
  • Battery Matrials Unit, Okawa Development Center, Institute for Integrated Product Development
1997 ISO14001
Showa Denko K.K. Tokuyama Plant 2000 ISO14001
Showa Denko K.K. Isesaki Plant 2003 ISO14001
Showa Denko K.K. Tatsuno Plant, HIPACK Co.,LTD. Tatsuno Plant 2004 ISO14001
Showa Denko K.K. Omachi Plant 1997 ISO14001
Showa Denko K.K. Shiojiri Plant, Showa Denko Ceramics Co.,Ltd Shiojiri Plant 1998 ISO14001
Showa Denko K.K. Yokohama Plant 1998 ISO14001
Showa Denko K.K. Oyama Plant 2000 ISO14001
Showa Denko K.K. Sakai Plant 2001 ISO14001
Showa Denko K.K. Kitakata Plant 2002 ISO14001
Showa Denko K.K. Chichibu Plant 1999 ISO14001
Showa Denko K.K. Chiba Plant, SHOWA DENKO Electronics K.K. 2005 ISO14001
Showa Denko K.K. Institute for Integrated Product Development (Toke) 2000 ISO14001
Tsurusaki Kyodo Doryoku Co., Ltd.   1998 ISO14001
Sun Allomer Ltd. Oita Plant 2001 ISO14001
Sun Allomer Ltd. Kawasaki Plant 1999 ISO14001
Showa Denko Ceramics Co., Ltd. Toyama Plant 1998 ISO14001
Shinshu Showa Co., Ltd. Omachi Plant 1997 ISO14001
Union Showa K.K. Head Office, Yokkaichi Plant, Aizu Plant 2003 ISO14001
Shoko Electronics Co.,Ltd.   2014 ISO14001
Showa Denko Gas Products Co., Ltd. Production Division(Kawasaki Plant/Yokkaichi Plant/Quality Assurance Department/Environmental Safety Department/Engineering Department/Okawa Gas Center)
Sales Division(Industrial Materials Department/Development Department)
1999 ISO14001
Showa Denko HD Yamagata K.K.   2009 ISO14001
Niigata Showa K.K.   2010 ISO14001
Showa Aluminum Can Corp. Hikone Factory, Showa Aluminum Can Recycling Center Co., Ltd. Hikone 2000 ISO14001
Showa Aluminum Can Corp. Oyama Factory, Showa Aluminum Can Recycling Center Co., Ltd. Oyama 2001 ISO14001
Showa Aluminum Can Corp. Omuta Factory 2001 ISO14001
Showa Denko Packaging Co.,Ltd. Whole company 2010 Eco-action 21
SHOTIC Europa Industria de Aluminio Lda.   2003 ISO14001
Showa Aluminum Manufacturing Philippines Corporation   2007 ISO14001
Showa denko Sichuan Carbon Inc.   2016 ISO14001
Shanghai Showa Highpolymer Trading Co., Ltd.   2006 ISO14001
Showa Denko HD Singapore Pte Ltd.   1999 ISO14001
Showa Denko HD Trace corp.   2007 ISO14001
Showa Denko HD (Malaysia) Sdn.Bhd.   2002 ISO14001
Showa Specialty Gas(Taiwan) Co., Ltd. Showa Specialty Gas(Taiwan) Co., Ltd.,
Taiwan Showa Chemicals Manufacturing Co., Ltd.
2008 ISO14001
Showa Denko (Dalian) Co., Ltd.   2005 ISO14001
Zhejiang Quzhou Juhua Showa Electronic Chemical Materials Co., Ltd.   2019 ISO14001
Showa Specialty Gas Singapore (Pte.) Ltd.   2004 ISO14001
SHOWA DENKO New Material (Zhuhai) CO.,LTD.   2018 ISO14001
Hanacans JSC Head Office 2018 ISO14001

Occupational health and safety management systems

(June 2020)

Sites with certified systems among Showa Denko’s 16 plants and 14 affiliated companies (20 plants) in Japan and 22 affiliated companies outside the country:
 Operation siteYear of acquisitionCertification
Showa Denko K.K. Oita Complex 2009 ISO45001
Showa Denko K.K. Kawasaki Plant 2009 OSHMS
Showa Denko K.K. Higashinagahara Plant 2010 OHSAS
Showa Denko K.K. Tokuyama Plant 2009 OHSAS
Showa Denko K.K. Isesaki Plant 2013 OHSAS
Showa Denko K.K. Tatsuno Plant, HIPACK CO.,LTD. Tatsuno Plant 2014 OHSAS
Showa Denko K.K. Omachi Plant 2008 OSHMS
Showa Denko K.K. Oyama Plant 2007 OSHMS
Showa Denko K.K. Kitakata Plant 2012 OHSAS
Showa Denko K.K. Chichibu Plant 2009 OSHMS
Showa Denko K.K. Chiba Plant, SHOWA DENKO Electronics K.K. 2009 OHSAS
Showa Denko K.K. Institute for Integrated Product Development (Toke) 2009 OHSAS
Tsurusaki Kyodo Doryoku Co,.Ltd.   2009 OHSAS
Sun Allomer Ltd. Oita Plant 2011 ISO45001
Sun Allomer Ltd. Kawasaki Plant 2018 ISO45001
Showa Ceramics Co., Ltd. Toyama Plant,Shiojiri Plant, Yokohama Plant 2010 OHSAS
Showa Denko Gas Products Co., Ltd. Kawasaki Plant 2013 JISHA Good Safety Company
Showa Denko Gas Products Co., Ltd. Yokkaichi Plant 2014 JISHA Good Safety Company
Showa Denko HD Yamagata K.K.   2012 OHSAS
Showa Denko HD Singapore Pte Ltd.   2008 OHSAS
Showa Denko HD Trace corp.   2008 OHSAS
Showa Denko HD Malaysia SDN.BHD   2010 OHSAS

Rate of the Group’s domestic and overseas manufacturing bases with certified systems (as of June 2020):
  - Environmental management systems: 77% (45/58 plants)
  - Occupational health and safety management systems: 41% (24/58 plants) 
    OHSAS 18001/ISO 45001: 31% (18/58 plants)

  • ※1For Group companies, the following companies are excluded from the calculation target: Certified as a Showa Denko plant, has a plant on the premises for manufacturing services, and does not involve Showa Denko directly with the promotion of Responsible Care at the company.




  • Quality management system

    (June 2020)

     Operation siteYear of acquisitionCategory
    Showa Denko K.K. Oita Complex 1997 ISO9001
    Showa Denko K.K. Kawasaki Plant 1995 ISO9001
    Showa Denko K.K. Higashinagahara Plant 1999 ISO9001
    Showa Denko K.K. Isesaki Plant 1998 ISO9001
    Showa Denko K.K. Tatsuno Plant 1998 ISO9001
    Showa Denko K.K. Oita Production Department, Tatsuno Plant 1998 ISO9001
    Showa Denko K.K. Tokuyama Plant 1996 ISO9001
    Showa Denko K.K. Omachi Plant 1995 ISO9001
    Showa Denko K.K. Shiojiri Plant 1999 ISO9001
    Showa Denko K.K. Yokohama Plant 2002 ISO9001
    Showa Denko K.K. Aluminum Rolled Products Division 1999 ISO9001
    Showa Denko K.K. Oyama Plant 1998 ISO9001
    Showa Denko K.K. Electronics Materials Division, Chichibu Plant

    1995
    2004

    ISO9001·
    IATF16949

    Sun Allomer Ltd. Head Office, Oita Plant, Kawasaki Plant, Research and Development Division, Osaka Branch 1998 ISO9001
    Showa Denko Gas Products Co., Ltd. Production Division, Sales Division, STT 1997 ISO9001
    Union Showa K.K. Head Office, Yokkaichi Factory, Aizu Factory 1996 ISO9001
    HIPACK Co.,LTD.   1998 ISO9001
    Showa Denko Ceramics Co., Ltd. Shiojiri Plant, Toyama Plant,Yokohama Plant 1999 ISO9001
    Showa Fine Ceramics Co., Ltd.   2000 ISO9001
    Showa Aluminum Can Corp. Hikone Plant 1999 ISO9001
    Showa Aluminum Can Corp. Oyama Plant 2000 ISO9001
    Showa Aluminum Can Corp. Omuta Plant 2000 ISO9001
    Showa Aluminum Can Recycling Center   2001 ISO9001
    Showa Denko Sakai Aluminum K.K.   1999 ISO9001
    Showa Denko Kitakata Aluminum K.K.   2005 ISO9001・
    IATF16949
    Showa Denko Electronics   1995 ISO9001
    Showa Denko HD Yamagata K.K.   2010 ISO9001
    Showa Denko Packaging Co.,Ltd. Hikone Plant , Tokyo branch, Osaka branch, Isehara Plant 1998

    ISO9001・IATF16949

    Showa Denko Kenzai K.K. Head Office 2000 ISO9001
    Niigata Showa K.K.   2000 ISO9001
    Shoko Electronics Co.,Ltd.   2014

    ISO9001・
    IATF16949

    F2 Chemicals Limited   2004 ISO9001
    Shanghai Showa Highpolymer Co., Ltd.   2003 ISO9001
    Showa Specialty Gas (Taiwan) Co., Ltd.   2001 ISO9001
    Taiwan Showa Chemicals Manufacturing Co., Ltd.   2006 ISO9001
    Shanghai Showa Chemicals Co., Ltd.   2010 ISO9001
    Zhejang Quzhou Juhua Showa Electoronic Chemical Materials Co., Ltd.   2010 ISO9001
    Showa Specialty Gas Singapore (Pte.) Ltd.   2012 ISO9001
    Anseong Gas Center, Korea Showa Chemicals Co.   2013 ISO9001
    Shanghai Showa Electronics Materials Co., Ltd.   2013 ISO9001
    SHOWA DENKO New Material (Zhuhai) CO.,LTD.   2018 ISO9001
    Lianyungang Zaoling Abrasives Co., Ltd.   2009 ISO9001
    Showa Denko Carbon, Inc.   1995 ISO9001
    Showa Denko Sichuan Carbon Inc.   2014 ISO9001
    SHOTIC Europa Industria de Aluminio Lda.   2004 ISO9001·
    IATF16949
    Showa Aluminum Manufacturing Philippines Corporation   2000 ISO9001
    SHOTIC MALAYSIA SDN. BHD.   2018 ISO9001・
    IATF16949
    Showa Denko (Dalian) Co., Ltd.   2005 ISO9001
    Showa Denko HD Singapore Pte Ltd.   2003 ISO9001
    Showa Denko HD Trace corp.   1996 ISO9001
    Showa Denko Battery Materials (Shanghai) Co., Ltd.   2019

    ISO9001・IATF16949

    Showa Denko Europe GmbH    2016 ISO9001

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