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Chinese Standard: GB/T 17680.11-2008
$10
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Chinese Standard: GB/T 17680.10-2003
$10
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Chinese Standard: GB/T 17680.1-2008
$10
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Chinese Standard: GB/T 1768-2006
$10
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Chinese Standard: GB/T 17679-1999
$10
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Chinese Standard: GB/T 17678.2-1999
$10
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Chinese Standard: GB/T 17678.1-1999
$10
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Chinese Standard: GB/T 17677-1999
$10
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Chinese Standard: GB/T 17676-1999
$10
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Chinese Standard: GB/T 17674-2012
$10
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Chinese Standard: GB/T 17672-1999
$10
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Chinese Standard: GB/T 17671-1999
$10
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Chinese Standard: GB/T 17670-2008
$10
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Chinese Standard: GB/T 17669.5-1999
$10
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Chinese Standard: GB/T 17669.4-1999
$10
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Chinese Standard: GB/T 17669.3-1999
$10
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Chinese Standard: GB/T 17669.2-1999
$10
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Chinese Standard: GB/T 17669.1-1999
$10
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Chinese Standard: GB/T 17666-1999
$10
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Chinese Standard: GB/T 17664-1999
$10
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Chinese Standard: GB/T 17661-1999
$10
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Chinese Standard: GB/T 17660-1999
$10
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Chinese Standard: GB/T 1766-2008
$10
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Chinese Standard: GB/T 17659.2-2018
$10
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Chinese Standard: GB/T 17659.1-2018
$10
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Chinese Standard: GB/T 17658-2018
$10
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Chinese Standard: GB/T 17657-2013
$10
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Chinese Standard: GB/T 17656-2018
$10
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Chinese Standard: GB/T 17651.2-1998
$10
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Chinese Standard: GB/T 17651.1-1998
$10
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Chinese Standard: GB/T 17650.2-1998
$10
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Chinese Standard: GB/T 17650.1-1998
$10
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Chinese Standard: GB/T 17649-1998
$10
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Chinese Standard: GB/T 17648-1998
$10
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Chinese Standard: GB/T 17680.8-2003
$10
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Chinese Standard: GB/T 17680.9-2003
$10
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Chinese Standard: GB/T 17682-1999
$10
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Chinese Standard: GB/T 17683.1-1999
$10
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Chinese Standard: GB/T 17684-2008
$10
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Chinese Standard: GB/T 17685-2016
$10
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Chinese Standard: GB/T 17689-2008
$10
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Chinese Standard: GB/T 17690-1999
$10
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Chinese Standard: GB/T 17692-1999
$10
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Chinese Standard: GB/T 17693.1-2008
$10
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Chinese Standard: GB/T 17693.10-2019
$10
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Chinese Standard: GB/T 17693.11-2019
$10
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Chinese Standard: GB/T 17693.12-2019
$10
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Chinese Standard: GB/T 17693.2-1999
$10
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Chinese Standard: GB/T 17693.3-2009
$10
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Chinese Standard: GB/T 17693.4-2009
$10
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Chinese Standard: GB/T 17693.5-2009
$10
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Chinese Standard: GB/T 17693.6-2008
$10
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Chinese Standard: GB/T 17693.7-2003
$10
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Chinese Standard: GB/T 17693.8-2008
$10
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