... cost, Minimum cost for 3 prototype PCB is $80 only. 2.Short lead time. 3. PCB RoHS compliant Material: FR4, High TG ... Tolerance: +/-0.1mmMin. Finished Diameter of PTH Hole: 0.2mmMax. Board Thickness/Hole Ratio: 12:1Min. Solder Mask Bridge: 4mil (Min ... , Non-across blind/buried vias, characteristic impedance control, Rigid-flex board etc.Reliability Test: flying probe test/fixture test, impedance test ...