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1982
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To establish Dongwha Industry Company
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1990
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Acquired UL standard approval
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1997
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To switch over by a corporation named Dongin Electric Co., Ltd.
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2001
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ISO 9001:2000 quality management system certification
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2005
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Registration of a patent about elevator limit switch
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2007
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Acquired INNO-BIZ & MAIN-BIZ
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