Shenzhen Ysstech Info-Tech Co.Ltd(300377) disclosure of performance forecast. The company expects a profit of 261.01 million yuan to 276.01 million yuan in 2021, an increase of 1773.47% - 1881.14% over the same period of last year. During the reporting period, the amount of non recurring profit and loss is expected to have an impact on the net profit attributable to the shareholders of the listed company of about 21.101 million yuan.