国开行发行1年期债券，规模60亿元，发行利率1.3808%，预期1.4000%，投标倍数3.76倍，边际倍数27.92倍；国开行发行3年期债券，规模50亿元，发行利率1.6405%，预期1.6500%，投标倍数2.90倍，边际倍数6.28倍。

Group 1 - The China Development Bank issued a 1-year bond with a scale of 6 billion yuan and an issuance rate of 1.3808%, which was lower than the expected rate of 1.4000%. The bid-to-cover ratio was 3.76 times, and the marginal ratio was 27.92 times [1] - The China Development Bank also issued a 3-year bond with a scale of 5 billion yuan and an issuance rate of 1.6405%, slightly below the expected rate of 1.6500%. The bid-to-cover ratio for this bond was 2.90 times, with a marginal ratio of 6.28 times [1]