... aluminum, Bottom: iron 2) Power source: 220V, 50Hz; 110V, 60Hz grid lighting fixture1) Reflector: mirror aluminum, Bottom: iron.2) Power source ... : 220V, 50Hz; 110V, 60Hz.3) Suitable for fluorescent T-8 / T-5 lamps.4) With magnetic ballast or electric ballast.5 ... and excellent quality.9 ) Certification: CE, ROHS AND CCC. indoor grid lighting fixture