... called scratch phone card, prepaid card, mainly used in telecommunication. Black layer recharge card is also called scratch phone card, prepaid ... Holographic label, Slik screen grey ink. 8- Security feature options: Black core paper, confusion pattern, MC green ink under the HRN ... /4, 4/2/ 4/1 color offset printing, UV printing, serial number punch, pin number, scratch-off panel, barcode, hole punched ...