Free PDF documents compiled for philatelic study, appreciation and cultural reference —
chronology and historical archives, terminology and reference tools, exhibition catalogues, and yearly issue lists.
面向集邮爱好者的 PDF 参考文档下载区，涵盖邮票大事记与历史档案、术语与参考工具、邮展专题资料及年度发行目录，供集邮研究、艺术赏析与文化传播之用。
Historical timelines and major-event chronologies for the study of Chinese postal history.
Each entry is graded Verified / Disputed / Omitted.
中国邮票历史时间线与重大事件编年，供邮票史研究查阅。所载条目均标注【已核实】【存异说】【暂缺】三级。
Bilingual glossaries and reference tables for philatelic terms, grading and catalogue usage.
邮品术语、品相分级与目录用法之中英对照工具书，便于检索与查证。
Catalogues and reference documents from major national and international philatelic exhibitions.
国内及国际重大邮展、集邮活动相关参考资料，含邮展目录与活动指南。
Notice. All documents are provided for personal philatelic reference.
PDF files are named in English for cross-platform compatibility.
Redistribution of excerpts is welcome provided the source is acknowledged and the content kept intact.
声明。全部文档仅供集邮爱好者个人查阅参考。PDF 文件采用英文命名以确保跨平台兼容性。欢迎转载，请注明出处并保持内容完整。