科创债20天发行超3000亿元，银行类机构贡献突出

Group 1 - The issuance of Sci-tech bonds has significantly increased in quantity and scale since the announcement of related policies on May 7, with a total of 148 bonds issued and a cumulative issuance scale of 324.24 billion [1] - Bank institutions have made a notable contribution, with state-owned banks and policy banks together issuing bonds worth 170 billion, accounting for over 50% of the total issuance [1] - Market enthusiasm for subscription remains high, and financing costs are at relatively low levels, indicating the initial development of the "technology board" in the bond market [1]