... 2.Colour:green 3.Layer:2 4.Finished:HASL pcb design ITEMS:SPECIFICATIONLAYER:2 -10layerBOARD MATERIAL:FR-4, CEM-1,CEM ... -3, High TG, FR4 Halogen Free,FR-1,FR-2 BOARD THICKNESS:0.6-3.2mmCAMBER ... /red/blue CERTIFICATE:UL,ROHS,ISO9001,T/S 16949ASSEMBLY:LEDA FREE,NOT LEAD FREE pcb design