Impedance Control Tolerance8%Max.Test Points per board100,Website:http://www.qiantingting.vip.seo.com.cn,000Min.Core Thickness0.05mmMin.SMT/QFP Pitch0.25mmMin.Solder Mask Dam Width0.076mmShape machining precision +/-0.1mmHDI Structure 1+N+1 \ 2+N+2\3+N+3Drilling Hole to Hole Accuracy+/-0.05mmMinimum via0.1mmQuality controlAOI,100% electronic testAspect Ratio10:1Min.BGA Pitch0.3mmCertification ISO9001, ISO14001, TS16949, UL Special processMultilayer PCB with blind or buried   vias, impedance controlpackingvacuum packaging,then bubbles and   ship in carton