... in higher quality, more competitive price, quicker delivery and better logistic service…Welcome to send us RFQ! This ... 1/AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0.3mm-3.0mm,+/-0.1mm(tolerance)Copper ... 8um(tolerance),purity 99.5%Impedance Control±10%Bow and Twist MAX.0.75%(SMT)Anti-strip 0. ... SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! lcd display timer control PCB