... cell phone PCB; 2.good quality,reasonable price; 3.quicker delivery; 4.better logistic service; 5.UL, ... RoHS Compliant)/CEM-3/CEM-1/AluminiumLayersingle layer,double layer,multi-layer(4-10)Board Thickness0.3mm-3.0mm,+/-0.1mm ... approved) Surface Finish HALtin height≤0.05mmENIGNickel 3-7um,gold:0.5-0.7umOSP/flash gold ... ,ISO,ROHS,UL, Welcome to visitWALBOND ! 6 Layer Processors and Converters PCB with BGA