... printed circuit board. Cover flexible base board with dry film, and then produce circuit after being subject to exposure, ... 10 mm7Min bonding pad diameter10mil8Max proportion of drilling hole and board thickness1:12.59Max size of finish boar23inch* ... of Idents25mil15Color of silk-screenWhite,Yellow,Black16Date file formatGERBER FILE and DRILLING FILE, PROTEL SERIES, PADS2000 SERIES, Powerpcb SERIES, ...