Wallpaper, also known as wall covering, is an interior wall decoration material made from paper-based substrates, non-woven fabrics, PVC, or pure paper, processed through printing, embossing, and coating techniques. It features rich patterns, realistic textures, easy installation, and high cost-effectiveness, effectively concealing wall imperfections and enhancing spatial quality. By material, it can be categorized into PVC wallpaper, non-woven wallpaper, pure paper wallpaper, and flocked wallpaper; by function, it includes self-adhesive wallpaper, waterproof wallpaper, flame-retardant wallpaper, and eco-friendly wallpaper for children\'s rooms. Widely used in home bedrooms, living rooms, accent walls, and commercial spaces, it is an important alternative to latex paint in modern soft furnishing.