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| ISO-English |
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| ISO-Korean |
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| Certificate "2007 Korea Management Award" |
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Korea Internatinal
- Trade Association |
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| Certificate of trademark registration |
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| Certificate of utility model registration |
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| Certificate of utility model registration |
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| Certificate of utility model registration |
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| Certificate of utility model registration |
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| Certificate of utility model registration |
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| Certificate of utility model registration |
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| Certificate of utility model registration |
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| Certificate of Membership |
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| Certificate "2007 Korea Management Award" |
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| Tablet "2007 Korea Management Award |
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| Certificate of Business registration |
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| Korea Polytechnic University |
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| letter of oppointment |
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