China’s standards
In China, certain requirements for chromatic aberration are: superior products – no color difference is allowed; first-class products – no apparent differences are allowed; qualified products – allow for differences, but usually do not affect the use. At present, domestic manufacturers aside from a few manufacturers essentially implement the typical of first-class products.
From a scientific perspective
Products without chromatic aberration can’t be produced, but only theoretically. As the color of the wallpaper isn’t like paint or color, it is made up of monochrome, and the wallpaper is basically printed by multi-color, in fact it is all place color printing, and each published pattern is only expressed in a part of the final item or It is a small amount of stars in all areas. Unlike paints or paints, the colour difference meter can be utilized to measure its color difference, which can be represented by data. The living of chromatic aberration is definitely absolute. It really 
is a pseudoscience that will not recognize its presence, but it should be within the scope of recognition. The degree of recognition varies and the results vary.
Light can cause color differences
According to experience, if the color difference of the wallpaper can be regarding backlighting or sunlight, the difference in color because of the difference in light reflection of the wallpaper will be reflected. Therefore, in a strong light or direct sunlight environment, try to make use of a wallpaper with rich printed patterns. Because the reflection of the design will surpass the reflection of the chromatic aberration, the chromatic aberration could be well avoided.
Avoid chromatic aberration tips
Furthermore, if the ordinary wallpaper does not take light, you may use the method of turning the head to effectively avoid chromatic aberration. If different Classic Wall covering batches of wallpapers are found in the same area, you can use the same batch of wallpapers on different wall space to avoid unnecessary trouble.
