Wallpaper blue drops water Wallpaper printing techniques include surface printing, gravure printing, silk screen-printing, rotary printing, and digital printing. Wallpaper is made in long rolls, which are hung vertically on a wall. Journal · 09 · 03+♥ 549 Last update at 03 · 09 · by milo ‧‧‧ One of 7755Wallpaper More in Wallpaper Home Wallpaper blue drops water PIFTW