... ISO9001-2000, ISO14001 1. FR4 material IC bonding pcb board2. flash gold3. Fast delivery and competitive price4. Certificate: ROHS, UL, ... , Bergquist2). Surface Treatment: HASL,HASL lead-free,HAL,Flash gold,immersion gold,OSP,Gold Finger Palting,Selective thick gold ... 9). Min. Line width/Line spacing: 3mil/3mil10). Copper thickness in hole: >20um11). Board thickness tolerance: ±10%12). Outline tolerance ...