... 0.5oz ~ 3.0ozInner Cu wight 0.5oz ~ 3.0oz Laminate MaterialsFR-4,FR-1,,FR-2,CEM-1,CEM-3Process ... )SilkscreenColorWhite,black,yellow,red,blue,greenMin. Size0.006”(0.15mm)Surface FinishHASL,HASL pb free,immersion gold,immersion silver,immersion tin ... pcb,kindly contact me for more details! fr4 copper clad laminate pcb board manufacturer