... is of my company's process capacity for your reference, for more messages, pls contact with us freely ... AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0.3mm-3.0mm,+/-0.1mm(tolerance)Copper ... to 105um),+/-8um(tolerance),purity 99.5%Impedance Control±10%Bow and Twist MAX.0.75%(SMT) ... 2mmPunch±0.1mm E-testing pass percent97% pass for the first time,+/-2%(tolerance) Certificate SGS, ...