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GB/T 11066.5-2008
Methods for chemical analysis of gold - Determination of silver,copper,iron,lead,antimony and bismuth contents - Atomic emission spectrometry
GB/T 11066.4-2008
Methods for chemical analysis of gold - Determination of copper, lead and bismuth contents - Flame atomic absorption spectrometry
GB/T 11066.3-2008
Methods for chemical analysis of gold - Determination of iron content - Flame atomic absorption spectrometry
GB/T 11066.2-2008
Methods for chemical analysis of gold - Determination of silver content - Flame atomic absorption spectrometry
GB/T 11066.1-2008
Methods for chemical analysis of gold - Determination of gold content - Fire assaying method
GB/T 8182-2008
Tantalum and tantalum alloy seamless tubes
GB/T 14841-2008
Tantalum and tantalum alloy rods
GB/T 8183-2007
Niobium and niobium alloy seamless tubes
GB/T 6896-2007
Niobium bars
GB/T 3876-2007
Molybdenum and molybdenum alloy plate and sheet
GB/T 14842-2007
Niobium and niobium alloys rods and bars
GB/T 10116-2007
Ammonium paratungstate
GB/T 3877-2006
Molybdenum foil
GB/T 3875-2006
Tungsten sheet
GB/T 20424-2006
The specification for limit on harmful element content of the heavy metal concentrates products
GB/T 3630-2006
Niobium sheet，strip and foil
GB/T 3629-2006
Tantalum and tantalum alloy sheet，strip and foil
GB/T 3459-2006
Tungsten bars and rods
GB/T 3458-2006
Tungsten Powder
GB/T 20424-2006