A wide range of silicon steel EI lamination. Detailed Product DescriptionTransformer core: International standardwide ranges ... kinds of transformer core1)Standard Model No EI28~,EI190.5 2)Silicon steel gradeA)Baosteel:B50A1000, B50A800, B50A600, B50A470, B35A550, B35A440 etc ... made to order) EI-38.40.9EI-412.0EI-481.2,2.0,2.4EI-751.2,1.7EI-85.80.99EI-1323