Suzhou Uigreen Micro&Nano Technologies Co.Ltd(688661) was surveyed by 19 institutions on March 31, 2022. Among them, there are 9 securities companies, 5 investment companies, 3 fund management companies and 2 asset management companies. Based on this research event, we found that the company's main capital flow showed a net purchase of 3.165 million yuan in the last five trading days. In the trend dimension, the stock prices operate below the 10th and 20th lines, and the market is not willing to do more.