... 2, UL, ROHS, SGS certificate 3, low price, high quality 4, prompt leadtime for production and sample ItemTechnology ParametersMaterialFR4,High Tg ... ~10layersFinished Copper Thickness0.5~6ozFinished Board Thickness0.2~6.0mmMin. Line/Track Space3milMin. Line/Track Width3milMin. Contour Tolerance+/-0.1mmMin.Finished hole size(PTH ...