At present, the production efficiency of 4680 large cylindrical batteries in the industry is 50~ 150ppm. Compared with small cylindrical battery, its single-line capacity is increased by 3~ 10 times, resulting in labor cost and effective scale amortization of fixed assets, and its manufacturing cost is about 50-70% of that of small cylindrical battery. With the continuous improvement of vat technology, its efficiency is expected to reach 300ppm, and the annual production capacity of single line is expected to be equivalent to that of Fang.