... International standards3) Raw Materials (cold rolled grain non oriented silicon steel coils): a) Bao steel: B50A1000, B50A800, B50A600, B50A470, B35A550, B35A440b) Tai ... steel: 50TW800, 50TW600, 50TW1000, 50TW470c) Wu steel: 50WW1300, 50WW800, 50WW600, 50WW470, 350WW360, 350WW310d) An steel ...