... 2-Layer PCB with Gold Finger, Blue Solder Mask, Vias Plugged with Solder Mask, RoHS Compliance. 2-Layer PCB,Gold Finger,Blue Solder Mask,Vias Plugged with Solder Mask ... Strength> 1.3KV/mmPeel Strength1.4N/mmSolder Mask Abrasion>= 6HFlammability94V-0Surface FinishingHASL, LF-HASL, ... , Peelable Mask, Carbon PrintingMaterialFR4, ROGERS, Taconic, ARLON, BT, Ceramic, Aluminum 2-Layer PCB with Gold Finger ...