4B Small flakes of the coating are detached at intersections; less than 5 % of the area is affected.
4B Small flakes of the coating are detached at intersections; less than 5 % of the area is affected.
在方格交叉处有很小的涂层分离，少于5%的区域被影响。
4B Small flakes of the coating are detached at intersections; less than 5 % of the area is affected.
在方格交叉处有很小的涂层分离，少于5%的区域被影响。