... and fast delivery UL,SGS,ISO9001,RoHS,QS9000,TS16949 Layer:1~22 layersMaterials: FR-4, CEM-3, Teflon, Aluminum, Rogers, High ... 0.004" - 0.006"0.10 - 0.15mm Aspect Ratio 1 : 11 : 14Min. Line Width/Spacing½oz / 18um0.003" / 0.003 ... is to demonstrate the ability of our PCB factory, if you have specific requirements, please feel free to contact us. double-sided printed board