... 6-1.0mm ±10%Thickness>1.2mm ±0.127Min diameter of finished hole0.20mmMin drilling diameter0.20mmThickness of solder maskLine end 0.4-1.2milLine ... 30°,45°,60°Range of bevel ange25°-60°Warp and twist≤0.5%Surface treatmentHAL/HAL lead free,gold finger,OSP,silver ... for urgent sample,double sided board SERVICE:1) procurement agent electronic components,share with the best quanlity best price's electronic ...