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| 2006. 04 |
ISO certification (ISO9001:2000, ISO14001:2004) |
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| 2006. 04 |
center established (registered with the Korea Industrial Technology Association) |
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| 2006. 09 |
in KINTEX "INFRATECH Exposition" |
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| 2006. 10 |
patent No. 10-0643015 for "Spherical shoe enabling maintenance and repair" |
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