... Double Sided PCB board 1. FR4 Material 2. Treatment: HAL-free Pb 3. Is compatible with RoHS directive PCB boardWe ... CE UL ISO9001.Layer:1-30layersMaterial :High Tg FR4 ,FR-4 ,etc.Board Thickness : 0.4-6.0mmTreatment :Lead Free HASL ,ENIG , ... Immersion Tin ,Immersion Silver ,OSP etc,Solder mask :Green , Red , White ,Yellow ,Black ,Blue ...