... .Delivery time:2-3weeks 3.Certificates:UL,ISO9001:2000,RoHS induction cooker pcb board pcb assemblyLayer: 2 Layers Material: ceramic , F4 BK ... , Rogers, High Tg FR4, FR1, CEM-1, FR-4,etc Board Thickness: 0.4-6.0 mmTreatment : Lead Free HASL, ENIG, Immersion ...