... required to meet ROHS compliant-FR4 material with 0.2mm-3.2mm boards thickness-Copper weight:0.5OZ,1OZ,2OZ ... referrence1)Layer:from 1 to 202)Board finished thickness:0.21mm-7.0mm3)Material:FR-4,CEM- ... 1,CEM-3,High TG,FR4 Halogen Free ,Rogers,HF,NELCON,TACONIC,ARLON,etc4 ... Solder mask color :Green/yellow/black/white/red/blue11)Copper thickness in hole:>25.0um (1mil)12)Shape tolerance: ...