... kinds of lighting ballasts 2. Certificate: ISO 9001, ISO 14001 silicon steel sheetLTL Lamination Sheet Features:1) Specifications: Various TL laminations ... , 350WW360, 350WW310d) An steel: 50AW1300, 50AW1000, 50AW800, 50AW600, 50AW470e) Imported silicon steel coils, such as Chinese steel.3) Applicable to light ...