... Cu-based) HDI PCB assembly 2 layer,1.6mm,immersion gold 2 layer,1.6mm,immersion Tin 4layer,1. ... 6mm,immersion gold,plated slot, 4layer,1.6mm,immersion gold,half holegold finger 4layer,2 ... N+3Application standedIPC-6012 class 2Multilayer PCB Table 2: PCB business:Prototype : you can order any ... date to leave our facility after ordering is :2 layers : 4 w.d4 layers : 5 w ...