... silk legend height25milSilk legend colorWhite/ yellow /blackData file formatGERBER file and corresponding drilling file,PROTEL series,PADS2000,POWERPCB series,ODB++Electricity ... board, high frequency board(ROGERS,TEFLON) halogen-free board (FR-4,CEM-1,CEM-3)Other testing requestImpendence testing, Hole resistance ... , gold slice up, Solder ability. laptop Electronic Multilayer PCB Board with led pcb