Material:FR-4 Aluminum Number of Layer:4 Layers Surface Furnishing:Electroless gold plating 2U'' Soldermask:Green colorLegend printing:white colorMin. Finished Via Holes Size : 10mil ( 0.2mm ) Min. Line Width Spacing : 5mil ( 0.13 mm )Lead time : sample L/T: 3-8 days, M/P L/T:7-15 days