... . Specifications 1.PCB circuitry board design and PCB assembly service,controller boards; 2.multilayer pcb&pcba board; 3.Possess UL, ISO9001 ... maskSurface finishingHASL, Flash gold, Immersion gold, Gold finger, Carbon inkMax. panel size508mm x 610mmBow & twist0.7% (1.5mm board)Hole size ... if you have specifical requirements,need brand-new disigning or touch-ups on existing works,we can make it and look ...