Dian Diagnostics Group Co.Ltd(300244) disclosed the performance forecast of the first quarter. The company expects a profit of 710975000 yuan to 812542800 yuan in the first quarter of 2022, an increase of 110% – 140% over the same period of the previous year. In the first quarter, the company actively carried out nucleic acid testing business, and covid-19 testing business contributed significantly to the performance.