... Sided FR4 material 1 oz copper pcb board 2. Green solder mask, Immersion gold 3. with Competitive priceGeneral Specifications CapabilityMaterial ... type: CEM-3,FR-4,FR-4-TG170/TG180,Halogen Free,Rogers,Arlon,Taconic,Isola,PTFE, Bergquist2). Surface Treatment: HASL,HASL lead-free ... immersion silver,immersion tin, Carbon ink,peelable mask 3). Solder mask colour: Green/MATT Green/Blue/Yello/White/Black/Red4 ...