This part of GB/T 3903 specifies the test method for determining the wear resistance of inner soles. This section applies to any footwear with insoles.
GB/T 3903.31-2008 Referenced Document
GB/T 22049 Footwear—Standard atmospheres for conditioning and testing of footwear and components for footwear*, 2019-08-30 Update
GB/T 22050 Footwear.Sampling location,preparation and duration of conditioning of samples and test pieces
GB/T 3903.31-2008 history
2008GB/T 3903.31-2008 Footwear.Test methods for insoles.Abrasion resistance