775. The main reason for the closure of the company is the change in market demand, which leads to unsalable products and a decline in output. According to the news data of 20021Jiangsu, Zhejiang and Shanghai, 775 enterprises closed down in 20021Jiangsu, Zhejiang and Shanghai, mainly due to the current epidemic situation in 20021Jiangsu and Zhejiang, which led to the temporary suspension of production. This led to the subsequent closure.