... 1. Double-Sided FR4 material 1 oz copper pcb board 2. Green solder mask, Immersion gold 3. with Competitive priceGeneral Specifications ... 0.5oz ~ 3.0oz Laminate MaterialsFR-4,FR-1,,FR-2,CEM-1,CEM-3Process Requirements: Solder MaskColorgreen,light green,white ... ,FR-4-TG170/TG180,Halogen Free,Rogers,Arlon,Taconic,Isola,PTFE, Bergquist2). Surface Treatment: HASL,HASL lead-free,HAL,Flash gold ...