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    GB/T 23595.4-2009 Test methods of rare earth yellow phosphor for white LED lamps - Part 4: Determination of thermostability

    China National - GB Standards
    GB/T 23595.3-2009 Test methods of rare earth yellow phosphor for white LED lamps - Part 3: Determination of chromaticity coordinates

    China National - GB Standards
    GB/T 23595.2-2009 Test methods of rare earth yellow phosphor for white LED lamps - Part 2: Determination of relative brightness

    China National - GB Standards
    GB/T 23595.1-2009 Test methods of rare earth yellow phosphor for white LED lamps - Part 1: Determination of spectrum property

    China National - GB Standards
    GB/T 23594.2-2009 Chemical analysis methods of rare earth contents in samarium-europium-gadolinium concentrates - Part 2: Determination of fifteen rare earth oxide relative contents - Inductively coupled plasma emission spectrometry

    China National - GB Standards
    GB/T 23594.1-2009 Chemical analysis methods of rare earth contents in samarium-europium-gadolinium concentrates - Part 1: Determination of total rare earth oxide content - Gravimetry

    China National - GB Standards
    GB/T 23593-2009 Yttrium-europium-gadolinium oxide

    China National - GB Standards
    GB/T 23592-2009 Catalyst for motorcycle exhaust purification

    China National - GB Standards
    GB/T 23591-2009 Lanthanum-cerium-terbium oxide

    China National - GB Standards
    GB/T 23590-2009 Praseodymium-neodymium fluoride

    China National - GB Standards
    GB/T 23589-2009 Gadolinium oxalate

    China National - GB Standards
    GB/T 23588-2009 Scraps of neodymium iron boron

    China National - GB Standards
    GB/T 18881-2009 Catalyst for light-duty petrol vehicle exhaust purification

    China National - GB Standards
    GB/T 16482-2009 Yttrium-europium oxide-phosphor grade

    China National - GB Standards
    GB/T 13560-2009 Materials for sintered neodymium iron boron permanent magnets

    China National - GB Standards
    GB/T 12144-2009 Terbium oxide

    China National - GB Standards
    GB/T 6409.2-2009 Superabrasives - Diamond or cubic boron nitride grinding tools - Shapes and dimensions

    China National - GB Standards
    GB/T 2481.2-2009 Bonded abrasives - Determination and designation of grain size distribution - Part 2: Microgrits

    China National - GB Standards
    GB/T 23541-2009 Bonded abrasive products - Grinding wheel for steel balls

    China National - GB Standards
    GB/T 23540-2009 Coated abrasives - Flap wheels with incorporated flanges or separate flanges

    China National - GB Standards
    GB/T 23539-2009 Coated abrasives - Flap wheels with shaft

    China National - GB Standards
    GB/T 23538-2009 Conventional abrasive - Testing method for toughness ( Ball mill method )

    China National - GB Standards
    GB/T 23537-2009 Superabrasives - Limit deviations and run-out tolerances for grinding wheels with diamond or cubic boron nitride and mounted points

    China National - GB Standards
    GB/T 23536-2009 Superabrasive - Types of synthetic diamond

    China National - GB Standards
    GB/T 21944.4-2009 Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 4£ºBurner nozzle

    China National - GB Standards
    GB/T 21944.2-2009 Special products of silicon carbide - Kiln furniture of reaction bonded silicon carbide - Part 2£ºSpecial beam

    China National - GB Standards
    GB/T 20316.1-2009 Abrasive grains - Determination of bulk density - Part 1: Macrogrits

    China National - GB Standards
    GB/T 16458-2009 Terminology for abrasives and abrasive products

    China National - GB Standards
    GB/T 16457.2-2009 Blanks for superabrasive cutting-off wheels - Dimensions - Part 2£ºHand-held cutting-off in building and civil engineering

    China National - GB Standards
    GB/T 16457.1-2009 Blanks for superabrasive cutting-off wheels - Dimensions - Part 1£ºManually guided cutting-off in building and civil engineering

    China National - GB Standards

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