On April 22, the first Department of management of listed companies of Shenzhen Stock Exchange issued an inquiry letter to Jinzi Ham Co.Ltd(002515) on the annual report, requiring the company to explain the reasons for the sharp decline of the company's operating revenue and net profit in the first quarter of 2021 and 2022, as well as the measures (if any) the company has taken or plans to take, in combination with the market environment, the company's operation situation, the impact of the change of the company's actual controller on the company and other factors; Combined with the historical performance of the company and the seasonal impact of product sales, explain the reasons and rationality of the sharp fluctuation of the company's quarterly performance.