... as flexible printed circuit board. Cover flexible base board with dry film, and then produce circuit after being subject to exposure, developing ... Idents4mil14Min Height of Idents25mil15Color of silk-screenWhite,Yellow,Black16Date file formatGERBER FILE and DRILLING FILE, PROTEL SERIES, PADS2000 SERIES, Powerpcb SERIES, ODB++17E-Testing100 ...