... whout watermarkPrinting colorprinting color can be usedColor of material1) hologram sticker: silver, gold, blue, red, green, and so on2) security sitcker ... in sheetFeature1) waterproof and sticky2) material option: tamper proof or VOID or permanent adhesive laser foil, or security paper3) security feature ... as material, thickness, size, printing color, qty and other requirements. void security labels