ISO 2426的本部分规定了木材和制造缺陷固有特性的性质和限制 启用胶合板的视觉评估，以便分配给外观类。 ISO 2426的本部分适用于胶合板，其表面单板由软木制成。事实并非如此 适用于覆盖面板。

This part of ISO 2426 specifies the nature and limits of characteristics inherent in wood and manufacturing defects enabling the visual assessment of the plywood for allocation to an appearance class. This part of ISO 2426 applies to plywood, the surface veneers of which are made from softwood species. It does not apply to overlaid panels.