By the close of May, the Shenzhen Stock Exchange (SZSE) had witnessed the issuance of 374 science and innovation bonds, amounting to a total of 255.2 billion yuan, underscoring the robust vitality of the market. Notably, following the implementation of a new policy in May, the issuance of these bonds surged, totaling 9 billion yuan from May 7 to the end of the month. Notably, six securities companies played a significant role, contributing 5.7 billion yuan to this issuance.