1.Emission Control Systems PCB 2.good quality,reasonable price; 3.quicker ... 35um to 105um),+/-8um(tolerance),purity 99.5%Impedance Control±10%Bow and Twist MAX.0.75%(SMT)Anti ... ,black,white(LPI/MATT.,UL 94 V0 approved) Surface Finish HALtin height≤0.05mmENIGNickel 3-7um,gold:0 ... % pass for the first time,+/-2%(tolerance) Certificate SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! Emission Control Systems PCB