... ISO14001 4. Resonable price , High quality EI lamination (silicon steel product) :1. Specifications: EI24, EI-28, EI-30, ... Raw Materials (cold rolled grain non oriented silicon steel coils): a) Bao steel: B50A1000, B50A800, B50A600, B50A470, B35A550, B35A440 ... b) Tai steel: 50TW800, 50TW600, 50TW1000, 50TW470 c) Wu steel: 50WW1300, 50WW800, 50WW600, 50WW470, 350WW360, ...