Warranty stickers are made by hi residue destructible vinyl or void label materials.The destrucitble warranty stickers or eggskin labels will break into pieces when someone try to tear them off.And the VOID warratny stickers will leave void texts behind once tampered.They are widely used in electronics,appliances,such as fixed shops for warranty laptops,mobile phones,computers with warranty date.They can be round,rectangel with years,months and company logos or names.Welcome enquiries ^_^