GB/T 26704-2022 Pencils

GB/T 26704-2011 Pencils

GB/T 12654-2018 Writing paper GB/T 39024-2020 Black leads for wood-cased pencils—Classification and diameters GB/T 191-2000 Packaging—Pictorial marking for handling of goods GB/T 191-2008 Packaging—Pictorial marking for handling of goods GB 250-1995 Gray scale for assessing change in colour GB/T 250-2008 Textiles—Tests for colour fastness—Grey scale for assessing change in colour GB/T 451.2-2002 Paper and board—Determination of grammage GB/T 451.2-2023 Paper and board—Part 2:Determination of grammage GB/T 451.3-2002 Paper and board—Determination of thickness GB/T 456-2002 Paper and board—Determination of smoothness (Bekk method) GB/T 1543-2005 Paper and board—Determination of opacity (paper backing)—Diffuse reflectance method GB/T 2828.1-2003 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 2828.1-2012 Sampling procedures for inspection by attributes—Part 1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection GB/T 7974-2002 Paper, board and pulp-Measurement of brightness—Diff/Geometry GB/T 7974-2013 Paper,board and pulps—Measurement of diffuse blue reflectance factor—D65 brightness(Diff/ Geometry,Outdoor daylight conditions) GB/T 8427-1998 Textiles—Tests for color fastness—Color fastness to artifical light:eon arc fading lamp test GB/T 8427-2008 Textiles—Tests for color fastness—Color fastness to artificial light:Xenon arc fading lamp test GB/T 8427-2019 Textiles—Tests for color fastness—Color fastness to artificial light:Xenon arc GB 21027-2007 Request in common use of security for student's articles GB 21027-2020 Request in common use of security for student’s articles GB/T 191-2025 Graphical symbols marking for handling and storage of packages