LTL lamination fit for all kinds of light fitting ballasts Certificate: ISO9001, ISO14001. ... Materials:a) Bao steel: B50A1000, B50A800, B50A600, B50A470, B35A550, B35A440b) Tai steel: 50TW800, 50TW600, 50TW1000, 50TW470c) Wu steel: 50WW1300, 50WW800, 50WW600 ... type silicon steel sheets and non-standard lamination (magnetic cores for motors, ballasts, power switches, and automobile ignitors). We also ...