... ,FR4 Halogen Free ,Rogers,HF,NELCON,TACONIC,ARLON,etcMax. finished board size:23*25mil(580mm*900mm)Min.drilled hole size:3mil ... Gold/tin,Immersion Silver/Gold/Tin,OSP,Gold plating,Hard&Soft gold,Plating tin,Solder mask color :Green/yellow/black/white ... /red/blueCopper thickness in hole:>25.0um (1mil)Shape tolerance:plus or minus 0.13Hole tolerance:PTH:plus or ...