halogen free pcb 1.UL,ROHS,ISO,SGS,Layer: ... Manufacture Capability ItemManufacture CapabilityMaterialFR-4 / Hi Tg FR-4 / Lead free Materials (RoHS Compliant) /CEM-3, Aluminum, Metal basedLayer ... ;NPTH: ±0.05mmHole Position Tol±0.075mmPlatingHASL2.5umLead free HASL2.5umImmersion GoldNickel 3-7um Au:1-5u''OSP0 ... : 2008. if you have specific requirements, please feel free to contact us.We can do the best.