... finish ,2.29mm,1oz&0.5oz in inner layer,1oz on outer layer NO.ItemParameter1Number of Layers1-30Layers2Finished Boards Thickness0.2mm ... Base, Rogers,Tachnic, Halogen Free,high-frequency,Leadfree and so on.5Finished board thickness toleranceT>=0.8mm,Tolerance:+/-8%T<0 ... you can give me a chance to prepare a quotation for you, then you can know how we can help you to be more competitive ...