Wallpapers are generally divided into genuine, second-class and fourth-class products.

Genuine products are also called qualified products and first-class products, which are the ones we usually buy in stores.

Level 2 wallpapers have slight quality problems, including small color spots, color differences between wallpaper rolls or colors that are different from the sample, and are not qualified products. This kind of wallpaper has packaging, some factories do not put trademarks, and some factories put second-class trademarks.

The fourth-grade products are even worse. There is no packaging label, the wallpaper is broken, and there is no color. Oh. .

If you don’t understand, you can continue to ask me questions.