与两种类型的板材相关:开孔材料和闭孔材料。它们根据硬度指数进行分级。对于1类板材，规定了单一硬度等级，但对于2类板材，规定了一个范围。对于厚度约为100 mm的板材，规定了材料压痕硬度指数。对于厚度远小于50 mm的类型2，有必要使用由多个层组成的试样，因此规定了产品压痕硬度指数。关于有机材料染色的附件。

Related to two types of sheetings: open cell material and closed cell material. They are graded according to hardness index. For type 1 sheeting a single hardness level is specified, but for type 2 sheeting a range. For sheeting up to approximately 100 mm the material indentation hardness index is specified. For type 2, mostly available in thicknesses much less than 50 mm, it is necessary to use a test piece consisting of a number of plies, therefore the product indentation hardness index is specified. An annex about organic materials staining.