1.Lead free HASL PCB. 2.PCB manufactory. 3.Custom industry PCB Boards. 4.Material:FR-4,CEM-1,CEM-3.pcb 5.NO MOQ Welcome to ... before production. B.High quality,fast delivery,good service C.CERTIFICATE: ISO.SGS.ROHS.UL D.RICH EXPERIENCE IN PCB MAKING 3.Details ... mils40 mils48 mils56 milsMin/Max Layer CountMin 2 Layer, Max 22 LayerMin Inner Layer Thickness4 milsMin Trace / Space4/4 mils Protype 3/3 mils ...