国开行发行1年期债券，规模60亿元，发行利率1.3394%，预期1.4000%，投标倍数3.62倍，边际倍数1.07倍；国开行发行3年期债券，规模30亿元，发行利率1.5794%，预期1.5500%，投标倍数4.15倍，边际倍数8.59倍。

Group 1 - The China Development Bank issued a 1-year bond with a scale of 6 billion yuan, an issuance rate of 1.3394%, and a bid-to-cover ratio of 3.62 times [1] - The bank also issued a 3-year bond with a scale of 3 billion yuan, an issuance rate of 1.5794%, and a bid-to-cover ratio of 4.15 times [1] - The marginal bid-to-cover ratio for the 1-year bond was 1.07 times, while for the 3-year bond it was significantly higher at 8.59 times [1]