... service, for rigid or flexible, RoHScompliant, High Tg boards. All project comes with satisfaction guarantee andon ... 40mm 16mil 6 layer 1.00mm 40mil 8 layer 1.20mm 48mil 10 layer 1.60mm 60milMax Ratio ... 6milBoard thickness tolerance±10%Copper weight0.5oz, 1.0 oz, 1.5oz, 2.0oz,3.0 oz,4 ... OSP etc.Board materialFR-4 glass epoxy, FR4 High Tg, RoHS compliant; Aluminum, Rogers, etc.Insulation resistance1012Ω ...