In addition, the full medium-voltage variable frequency drive system of the double-stand tandem cold mill reduces the energy consumption of rolling per ton of steel, which is more energy-efficient than DC transmission. With 70% of the investment of two single cold rolling Mills, the same production capacity is achieved, reducing equipment investment and operating costs; fewer people are allocated in shifts, further reducing labor costs. AGC thickness control and tension control ensure the thickness accuracy of finished plates and improve product quality.