1. Wear resistance: Due to different testing methods, the definition of wear resistance of different materials by European standards and national standards is more complicated. For use, you only need to choose according to the EN685 level or national standard level of the specific material. The order of EN685 wear resistance is: 21-22-23-31-32-41-33-42-34-43. The national standard is: general-durable (ordered from low to high).
2. Color fastness: The color fastness value is measured with reference to ISO 105-B02, which is generally 6 degrees and 7 degrees. A higher value means better color fastness and less likely to change color.
3. Anti-skid: European standard BGR181 stipulates that the anti-skid grade of elastic materials should be between R9 and R11. The higher the grade, the better the anti-skid performance.
4. Residual dent: represents the strength of the floor's ability to recover after compression deformation. The European standard EN433 and the national standard both define this parameter, but due to differences in testing instruments, the definition of the final value is also different. The smaller the number, the smaller the final dent will be when the material is compressed. Generally, products with a homogeneous transparent structure are better than products with a laminated structure, and the residual dent value of products with a hard back layer of a laminated structure is better than that of products with a foam back layer.
5. Dimensional stability: EN434, GB/T4085-2005 and GB/T11982.1-2005 require the heating length change rate of materials (except linen) to be £0.40% for coils and £0.25% for sheets. Linen depends on the air humidity (refer to EN669).
6. Surface treatment: It can be divided into three types: full-body polyurethane (PUR) treatment, surface PUR treatment and no PUR treatment. The function of polyurethane is to close the pores between the molecules on the surface of the material and improve the anti-fouling performance.
7. Fire protection: According to the provisions of German DIN4102, American standard ASTM648 and national standard GB8624-1997, all flooring materials should reach B1 level.
