Why is Fuzhou Maixin Biological not listed?

The reason why Fuzhou Maixin Bio is not listed is that the gross profit margin of its main business has declined. The gross profit margin of Fuzhou Maixin Bio's main business depends on direct business, but the gross profit margin of the company's main business has not only declined, but also lagged behind the average level of the industry. Fuzhou Maixin Bio is not listed because its overall scale is small, and it does not have a competitive advantage in market coverage compared with similar enterprises that have been listed. Therefore, the reason why Fuzhou Maixin Bio is not listed is that the gross profit margin of its main business has declined.