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First, look: Look at the surface of the wall cloth for color differences, wrinkles, and air bubbles. Whether the flower pattern of the wall cloth is clear and uniform in color.
Second, touch: After reading, you can touch the wall cloth by hand and feel whether its texture is good and whether the thickness of the paper is the same.
Third, smell: This is very important, if the wall cloth smells, it is likely that formaldehyde, vinyl chloride and other volatile matter content is higher.
Fourth, rub: You can cut a small piece of wall cloth, wipe the paper with a damp cloth to see if there is a phenomenon of decolorization.
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