Another PFRMK36.4 cement vertical mill of Jiangsu Pengfei group entered the subsidiary company of Shaanxi Yaobai group (Shangluo Yaobai Xiushan Cement Co., Ltd.) in early December 2017. The commissioning and production of the equipment were completed in the commissioning period. After 100 hours of continuous production inspection, the operation was stable, the output exceeded the designed output, the hourly output was 105-120 tons, the specific surface area of the product was 350-400m2 / kg, and the cement quality was fully up to standard.