Look at the sales price
Good quality liquid wallpapers are produced by regular manufacturers according to formula, and the price is moderate; while poor quality paints, some cut corners in production, even counterfeit production, low cost, sales price is much cheaper than good quality paint.
See water soluble
After the liquid wallpaper is stored for a period of time, the pattern particles will sink, and there will be a layer of protective glue on the top, which usually accounts for about 1/4 of the total amount of the coating. Where the liquid wallpaper of good quality, the protective glue aqueous solution is colorless or slightly yellow, and clearer; and the poor quality paint, the protective adhesive aqueous solution is turbid, obviously showing the same color as the pattern color, the main problem is not coating The stability is poor, that is, the storage period has passed and should not be used any more.
Look at the degree of particle
Take a clear glass and fill in a half cup of water, then take a little paint and stir in water. For good quality paint, the water in the cup is still clearly bottomed out, the particles are relatively independent in the clear water, and the size is even; and the poor quality liquid wallpaper, the water in the cup will immediately become turbid, and the particle size will be differentiated. A small number of large particles are like facial paralysis, and most of them are small, fluffy particles.
Look at the float
Where the liquid wallpaper of good quality is usually free of floating objects on the surface of the protective glue aqueous solution, there are very few float particles floating in the normal, but if the number of floating objects is large, the color particles are covered with the surface of the solution, and even have a certain thickness. It is not normal, it indicates that the quality of this coating is poor.
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