1.Building automation system PCB; 2.good quality,reasonable price; 3.quicker delivery; ... -3OZ (35um to 105um),+/-8um(tolerance),purity 99.5%Impedance Control±10%Bow and Twist MAX.0.75%(SMT)Anti-strip ... ) Certificate SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! Building automation system PCB