... 1, best price 2, high quality 3, quick delivery 4, considerate service high-precision multi-layer FR4 pcb 1-12 layer:FR-4, AluShort lead ... factory experienceISO9001,ISO14001,RoHS,UL,TS16949, SGS TestFactory Manufacture Capability:Layer: 1 to 12 layersMaterial type: FR-4, CEM-1, CEM ... carton packingProfiling: Punching, Routing, V-CUTCertificates: UL, ISO 9001, SGS high-precision multi-layer FR4 pcb