See, touch, smell, rub, soaked distinguish non-woven paper to see patterns and density nonwoven wallpaper discrimination is good or bad, first look at the color of the wallpaper surface is uniform, the pattern more clear as possible; second is to look at the number of organizations and sophistication, n negative sides must be seen, the higher the density Buwen explained better the quality. The thickness of the touch feel and toughness wallpaper is not necessarily proportional to mass, non-woven paper feel is very important, soft and delicate description of a higher density, contrary roughest its density will be lower, good flexibility, easy to break legend of good quality, and vice versa quality time. Smell the odor of wallpaper which is very simple, the more environmentally friendly wallpaper odor smell any odor even smaller, there will be some low-quality wallpaper pungent odor comes out, so that the firm can not buy wallpaper. It should be noted that some businesses claim that their products with an aromatic odor, these products may also be environmental non-compliance of products in this segment most important to note is odorless product is not odorless. Rub dirt measure of good quality wallpaper regardless of whether the surface is smooth, with or without texture, still very good care after the dirty, wet and dry wipes traces of dirt can be easily removed, but the poor quality of the wallpaper Or not clean, Or will scratch the surface of that force and friction surface decontamination contrast wallpaper wallpaper can be the difference between good and bad. Distinguishing good wallpaper mildew flooding low permeability level, even waterproof, few drops of water on the surface of the wallpaper, wallpaper or completely immersed in water permeability test water wallpaper, wallpaper discernible good or bad, good wallpaper in the future use of the process will not permeable and mildew. Some consumers worry wallpaper will not shrink, in fact, as long as the wallpaper waterproof performance is guaranteed, and be ready to deal with moisture in the walls, wallpaper during use is substantially no shrinkage. Replacing the wallpaper problem many consumers particularly concerned about whether it would be convenient to replace the wallpaper, wallpaper replacement due to the relatively low cost, many consumers in the purchase of the wallpaper in a certain period there is going to be replaced once the wallpaper to show a different style home , it is particularly worried about the wallpaper replacement, experts point out that it does not replace the wallpaper cumbersome.