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    You are here: Home > About Us > China National Standards Drafted
    About Us
    China National Standards Drafted
    YST was invited as the main drafter of several China National Standards:



    "Lead-free solders" GB/T 20422-2006


    "Test method for solders" GB/T 28770-2012


    "Test method of the strength for brazed and soldered joint" GB/T 11363-2008


    "Test method of wettability for brazing filter metals" GB/T 11364-2008


    "Soft soldering flux - classification and requirements" GB/T 15829-2008



    "No-clean flux used for crystalline silicon photovoltaic(PV) modules"SJ/T 11549-2015