1.mp3 board usb sd card 2.FOB price:US $ ... approved 4.Payment terms:T/T,Paypal mp3 board usb sd card / manufacturerWelcome to Eastwin! Our PCB ... Nickle,Immersion Gold,Immersion Tin,Immersion Silver,OSP,etc.Board Thickness Tolerance±10%Copper Weight Tolerance± 0.25 ... Standard SMT&Solder Assembly Line---- High density interconnected board placement technology capacity.Quote requirement for pcb&pcb assembly ...