... 2.Model Number: EI-28--EI-240 3.Thickness:0.5mm 4.MOQ:3 Ton 5.ROHS cetification EI-150 CRNGO silicon ... .Size:A150mmB125mmC50mmD25mmE25mmF75mmG100mm2.Thickness:0.5mm or 0.35mm 3.wide ranges of size are supplied :EI28,EI30,EI35,EI38.4 ,EI38.4 ,EI41,EI42 ... .Widely used in the Transformer Core EI lamination(ROHS Certification,best seller)