... OSP, Black Solder Mask,RoHS Compliance. FR4 PCB,2-Layer,OSPBlack Solder Mask,RoHS Compliance.CertificatesULISO9001TS16949ISO14001 ... Strength> 1.3KV/mmPeel Strength1.4N/mmSolder Mask Abrasion>= 6HFlammability94V-0Surface FinishingHASL, LF-HASL, ENIG ... Immersion Tin, Immersion Silver, OSP,Gold Finger, Peelable Mask, Carbon PrintingMaterialFR4, ROGERS, Taconic, ARLON, BT, ...