... , UL, ISO9001-2000, ISO14001 1. FR4 material, board thickness 1mm2. surface finish immersion gold3. Fast delivery and competitive price4. Certificate: ROHS, UL ... ,Taconic,Isola,PTFE, Bergquist2). Surface Treatment: HASL,HASL lead-free,HAL,Flash gold,immersion gold,OSP,Gold Finger Palting,Selective thick gold ...