... unit DC bus power supply and AC drive is used full digital inverter speed control system of SIEMENS;7. Main ... 000 tons per yearAnd we also provide continuous pickling line, stainless steel pickling line, 12 hi/ 6 hi reversing cold rolling mill ... , skin pass mill, tension leveling line, bright annealing line, electrolytic tinning line, galvanized line and so on. For more information, pls ...