... : 35W, 50W, 70W, 80W, 100W, 125W, 150W, 250W, 400W, 600W, 1000W All of the silicon steel sheets used for electromagentic ballasts ... good quality and made under high speed press. The products are painted in vacuum by automatic impregnating paint machine:1. It ... . The products are all of good quality and beautiful appearance.Certificates: TUV, CE, RoHS VS 1000W magnetic ballast for metal halide lamp ...