... quality Competitive price Excellent service Provide pcb, fpc, pcba (pcb assembly) servicePCB Product Technic ParameterItemParameterDouble sidedMultilayerNumber of Layers24~12Copper Thickness0.25 ... secondSurface FinishingOSP, HAL, Immersion gold , Gold plating, Rosin, Gold fingerOSP, HAL, Immersion gold , Gold plating, Rosin, Gold fingerQaulity standardIPC-A-600F IPC ...