Place of Origin: Shenzhen, China (Mainland) Base Material: FR-4, Aluminum,copper, al-copper, steel Layer:1 - 32layers Min. Hole Size: 0.2 mm Copper Thickness: min 0.02mm Min. Line Width: 0.1 mm Min. Line Spacing: 0.1 mm Board Thickness: 0.5mm - 3.0mm Surface Finishing: LF-HASL, OSP,Immersion Tin/Gold/Silve Certificate: ISO9001:2008,UL,CUL,TS 16949,RoHS,SGS