This part of GB/T 9846 specifies the general rules and permissible defects for the appearance grading of ordinary plywood. This section applies to ordinary plywood. This section does not apply to veneered plywood.
GB/T 9846.4-2004 Plywood-Part 4:Specification for classification by appearance of plywood for general use has been changed from GB/T 9846.5-1988 Plywood--Specification for classification by appearance of plywood for general use.
GB/T 9846.4-2004 Plywood-Part 4:Specification for classification by appearance of plywood for general use was changed to GB/T 9846-2015 Plywood for general use.