After the implementation of the GEM registration system, some GEM stocks will have letters before their names, such as NCU. What do these letters mean?

The letter n in the stock abbreviation represents the first day of listing, and the letter c represents the next day to the fifth day of listing. If the stock abbreviation is marked with the letter u, it means that the company has not yet made a profit; If it is profitable, the logo will be cancelled. The stock abbreviation is marked with the letter W, indicating that the issuer of the stock has different voting rights; The letter V indicates that the stock issuer has an agreement control framework or similar special arrangements.