... 3. Produce PCB and FPC board 4. UL, RoHS, SGS Double Sided PCB For OEM ServiceShenzhen Yuzhixiang Electronics ... Cam350, etcMaterialFR-4, Hi-Tg FR-4, Lead free Materials (RoHS Compliant) , CEM-3, CEM-1, Aluminium, High frequency Material (Rogers ... finger, immersion silver, immersion Tin, OSP, Carbon ink,Certificate ROHS ISO9001:2000 TS16949 SGS ULSpecial requirementsBuried and blind vias, Impedance ...