... manufacture PCB in higher quality, more competitive price, quicker delivery and better logistic service…Welcome to send us RFQ! This form ... process capacity for your reference, for more messages, pls contact with us freely!ItemSpecification MaterialFR-4 / Hi-Tg FR-4 / ... % pass for the first time,+/-2%(tolerance) Certificate SGS,ISO,ROHS,UL, Welcome to visit WALBOND ! 4L PCB with BGA and gold finger