... Quality: UL, ISO9001:2008, ROHS compliant,SGS Test 2.6 oz copper 3.9 years factory experience What we can do ... Board EdgeOutline: 0.25mm V-CUT: 0.40mmImpedance Control Tolerance+/-10%Test Voltage10-300VSolder Mask TypesGreen, Yellow, Red,White, Blue, Matt ... FinishingHASL,Immersion Silver/Gold, OSP,Plate Gold, Gold Finger 6 oz thick copper PCB