... ,EI57 ,EI60 ,EI66 ,EI75 EI76.2,EI78,EI84,EI85.4,EI96,EI105,EI108,EI114 ,EI120,EI132,EI133.2,EI144,EI150,EI152 ... )Tai steel 50TW800, 50TW600, 50TW1000, 50TW470D)Ma steelM50W470,M50W6003)Gap sizes EI-280.4, 0.5EI-1507.23EI-571.2EI-1141 ... ,6.73,8.38website:http://www.chinasiliconsteel.com/ Transformer ei lamination