1.1L PCB for drilling machine; 2.good quality,reasonable price; 3.quicker delivery; 4.better ... -3OZ (35um to 105um),+/-8um(tolerance),purity 99.5%Impedance Control±10%Bow and Twist MAX.0.75%(SMT)Anti-strip ... ,ISO,ROHS,UL, Welcome to visit WALBOND ! 1L PCB for drilling machine