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1948      Founded as Nanbu Shoko Co., Ltd.
1949      Started crystal unit production and sales
1950      Changed the Company’s name to Nihon Dempa Kogyo Co., Ltd.
 Relocated Registered Office to Ohyama-cho, Shibuya-ku, Tokyo
1954      Relocated to newly constructed Head Office and plant in Shibuya-ku, Tokyo
1959      Started crystal filter production
1960      Started crystal oscillator production
1962      Started construction of Sayama Plant in Sayama, Saitama Prefecture
1963      Started mass production of synthetic quartz crystals
 Crystal cutting facility completed in the Sayama Plant
 Began trading of NDK stock on the OTC market
1964      Assembly line completed in the Sayama Plant
 Opened Osaka Sales Office for sales in Osaka
1970      Established production affiliate Hawk Denshi Co., Ltd. in Niigata Prefecture
(now Niigata NDK Co., Ltd.)
1975      Opened representative sales office in California, U.S.A.
1976      Established subsidiary Furukawa NDK Co., Ltd. in Miyagi Prefecture
1979      Established subsidiary ASIAN NDK CRYSTAL SDN. BHD. in Selangor, Malaysia
 Established NDK America, Inc. in California, U.S.A., and dissolved representative sales office
1985      Completed main building at Sayama Plant
1986      Opened Chubu Sales Office for sales in Aichi Prefecture
 Established production subsidiary Malaysian Quartz Crystal Sdn.Bhd. in Selangor, Malaysia [now NDK QUARTZ (M) SDN. BHD.]
 Completed construction of new facilities at Sayama Plant
1988      Established NDK Electronics Singapore Pte. Ltd. [now NDK Crystal Asia, Pte. Ltd.] in Singapore.
 Established sales subsidiary NDK Europe Limited in the United Kingdom
1989      Established production subsidiary Hakodate NDK Co., Ltd. in Hakodate, Hokkaido
1990      Relocated Head Office functions to Shinjuku-ku, Tokyo
 Listed NDK stock on the Second Section of the Tokyo Stock Exchange
1994      Established production subsidiary Suzhou NDK Co., Ltd. in Suzhou, China
 Established sales subsidiary NDK Italy Srl [now NDK Europe Limited, Italy Office]
 ISO 9001 certification obtained
1995      Established sales subsidiary NDK ELECTRONICS (HK) LIMITED in Hong Kong
1998      QS-9000 certification obtained
 Listed on the First Section of the Tokyo Stock Exchange
1999      ISO 14001 certification obtained
2002      Established production subsidiary NDK Crystal, Inc. in Illinois, U.S.A.
 Established NDK Holdings USA, Inc. in Illinois, U.S.A.
 Established NRS Technologies Inc. in Hakodate, Hokkaido
 Established sales subsidiary NDK-Electronics Shanghai Co., Ltd.
2004      Opened Chitose Technical Center in Chitose, Hokkaido
2005      NRS Technologies Inc. was merged into Hakodate NDK Co., Ltd.
 Head Office functions relocated to Sasazuka, Shibuya-ku, Tokyo
2008      Quality Assurance Laboratory recognized by Japan Accreditation Board for Conformity Assessment as meeting the ISO/IEC 17025 (2005) international laboratory management standard
 Obtained approval as a specified exporter from Tokyo Customs
2009      Completed Laboratory ATOM, a new research facility, within the Sayama Plant
 Established Suzhou NDK Trading Co., Ltd. in Suzhou, China
2010      NDK became the first company in Japan to adopt IFRS
2014      ISO 13485 certification obtained
2015      Head Office functions relocated to Sasazuka, Shibuya-ku,Tokyo(within the same area before relocation)


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