... Units Produced(Previous Year) Transformer Core, Ballast Core, Silicon Steel Coil Product Line Transformer Core 18,000 Tons / Year, Ballast Core 6,000 Tons / Year, Silicon ... Steel Slit Coil 9,600 Tons / Year Transformer Core 9,000 Tons, Ballast Core 3,000 Tons, Silicon Steel Slit Coil 6,000 ...