印刷品是指由印刷商或出版商製作以及出版的材料[1]，例如書籍、雜誌、小冊子和其他宣傳材料，在某些情況下報紙也算入印刷品[2]。 參考文獻 [1]Printed Matter Rates 1848-1968. Inland Rates. Great Britain Philatelic Society. 2020 [18 September 2020]. （原始內容存檔於2021-06-06）. [2]Postal Convention Between the United States of America and the Republic of Mexico; December 11, 1861. The Avalon Project. Yale Law School. [2007-06-20]. （原始內容存檔於2009-04-19）. Wikiwand - on Seamless Wikipedia browsing. On steroids.