... E-paper main board pcb 1)Base material:FR-4 2)Surface Finishing: HAL 3)Certificate:UL,ROHS, ... 42)Surface Finish :HAL3)Certificate:UL,ROHS,REACH,ISO9001,T/S169494)board thickness:1.6mm5)Min hole size:0 ... 1mm7)Min line spacing: 0.1mm ITEMSSPECIFICATIONLAYER1-26BOARD MATERIALFR-4,CEM-1,CEM-3BOARD THINCKNESS0.2mm-6.0mmCAMBERD≤0. ... COLORWHITE, BLACK, YELLOW,GREENCERTIFICATEUL,ROHS,REACH,ISO9001,T/S16949