GB/T 21331-2008

GB/T 13507-1992 Unbleached sulfite pulp GB/T 2678.1-1993 Pulps--Determination of screened components GB/T 2678.4-1994 Pulps and paper--Determination of zero-span tensile properties GB/T 2679.6-1996 Corrugating medium--Determination of the flat crush resistance after laboratory fluting GB/T 5400-1998 Pulps--Method for determination of copper number GB/T 18829.6-2002 Determination of fiber coarseness GB/T 8940.2-2002 Pulp--Preparation of laboratory sheets for the measurement of brightness GB/T 10740-2002 Pulp--Estimation of dirt and shives