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Chinese Standard: GB 14374-1993

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Chinese Standard: GB 14287.4-2014

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Chinese Standard: GB 14287.3-2014

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Chinese Standard: GB 14287.2-2014

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Chinese Standard: GB 14287.1-2014

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Chinese Standard: GB 14249.1-1993

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Chinese Standard: GB 14232.3-2011

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Chinese Standard: GB 142-2013

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Chinese Standard: GB 14196.3-2008

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Chinese Standard: GB 14196.2-2008

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Chinese Standard: GB 14196.1-2008

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Chinese Standard: GB 14192-2005

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Chinese Standard: GB 14102-2005

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Chinese Standard: GB 14052-1993

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Chinese Standard: GB 14050-2008

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Chinese Standard: GB 14035-2018

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Chinese Standard: GB 14003-2005

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Chinese Standard: GB 13954-2009

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Chinese Standard: GB 13895-2018

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Chinese Standard: GB 13887-2008

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Chinese Standard: GB 13836-2000

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Chinese Standard: GB 13746-2008

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Chinese Standard: GB 13735-2017

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Chinese Standard: GB 13691-2008

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Chinese Standard: GB 13623-2003

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Chinese Standard: GB 13618-1992

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Chinese Standard: GB 13614-2012

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Chinese Standard: GB 13613-2011

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Chinese Standard: GB 13567-1998

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Chinese Standard: GB 13561.1-2009

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Chinese Standard: GB 13548-1992

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Chinese Standard: GB 1353-2018

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Chinese Standard: GB 1352-2009

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Chinese Standard: GB 13510-1992

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Chinese Standard: GB 1351-2008

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Chinese Standard: GB 1350-2009

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Chinese Standard: GB 13495.1-2015

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Chinese Standard: GB 13457-1992

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Chinese Standard: GB 13398-2008

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Chinese Standard: GB 13392-2005

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Chinese Standard: GB 13365-2005

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Chinese Standard: GB 13318-2003

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Chinese Standard: GB 13094-2017

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Chinese Standard: GB 13078-2017

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Chinese Standard: GB 13042-2008

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Chinese Standard: GB 12995-2006

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Chinese Standard: GB 12983-2004

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Chinese Standard: GB 12982-2004

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Chinese Standard: GB 12981-2012

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Chinese Standard: GB 12978-2003

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Chinese Standard: GB 12955-2008

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Chinese Standard: GB 12953-2003

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Chinese Standard: GB 12952-2011

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