... PCB in higher quality, more competitive price, quicker delivery and better logistic service…Welcome to send us RFQ! This ... capacity for your reference, for more messages, pls contact with us freely!ItemSpecification MaterialFR-4 / Hi-Tg FR-4 ... 8um(tolerance),purity 99.5%Impedance Control±10%Bow and Twist MAX.0.75%(SMT)Anti-strip 0.88N ... ROHS,UL, Welcome to visit WALBOND ! 4L PCB with BGA and gold finger