中国国家铁路集团公告称，拟于6月25日招标发行100亿元铁路建设债券，本期债券分为10年期和30年期两个品种，两个品种发行规模均为50亿元。

Core Viewpoint - The China National Railway Group announced plans to issue 10 billion yuan in railway construction bonds on June 25, with two types of bonds available: 10-year and 30-year, each with a scale of 5 billion yuan [1] Group 1 - The total bond issuance is set at 100 billion yuan, indicating a significant investment in railway infrastructure [1] - The issuance of both 10-year and 30-year bonds reflects a strategy to diversify funding sources for railway projects [1]