... . Legend Track width5milMin. Legend Height30milSolder mask colorGreen, black, blue. white, yellow, purple and matte, ectLegend/silkscreen colorWhite, yellow, black, ectSurface treatmentHAL, lead ... mask, Non-across blind and buried vias, characteristic impedance control ,Rigid-flex board ect.Reliability testOpen and short test, impedance test ...