... Green ink4. Silk screen: White ink5. high-quality Low cost double-sided pcb board6. Excellent quality with competitive price7. Certificate: ROHS, UL ... baseBoard thickness: 1.6mm Copper thickness: 1ozSurface finished: HASL lead-free Lead time:5 working daysPrototype for standard process ... ,Arlon,Taconic,Isola,PTFE, Bergquist2). Surface Treatment: HASL,HASL lead-free,HAL,Flash gold,immersion gold,OSP,Gold ...