1.Certificate:UL,ROHS 2.Company ... 4.quicker delivery Detailed Product DescriptionOur products( single sided PCB) got ISO and UL certificates ... and meet ROHS standard. ItemDescriptionsProduct rangePCB of Single, Double and Multi-layers. MCPCB, High frequency ... -12LayersMaterialFR-4,Taconic,Rogers, Aluminum-backed Laminate, CEM-1, CEM-3, etcSurface finishingHASL, Immersion gold, Immersion ...