Transformer core: wide ranges of size are supplied Thickness:0.5mm or 0.35mm 1)Standard Mould EI28, EI30,EI35, EI38.4 ,EI38.4 ,EI41, ... ,50ww400,50ww350B)Baosteel B50A800, B50A600, B50A470, B35A550, B35A440C)Tai steel 50TW800, 50TW600, 50TW1000, 50TW470D)Ma steelM50W470,M50W6003)Gap sizes EI ... .38, 0.8, 1.0, 2.4 EI-133.26.0,6.73,8.38website:http://www.chinasiliconsteel.com/ Transformer ei lamination