... delivery 4, considerate service high-precision multi-layer FR4 pcb 1-12 layer:FR-4, AluShort lead timeMore than 10 years ... factory experienceISO9001,ISO14001,RoHS,UL,TS16949, SGS TestFactory Manufacture Capability:Layer: 1 to 12 ... layersMaterial type: FR-4, CEM-1, CEM-3, High TG, FR4 ...