Postal Act Article 17
Subject to approval by competent regulatory agencies, Chunghwa Post may void postage stamps it issues. However, a public announcement must be made and the sale of the said stamps must be discontinued one month in advance.Holders of the voided postage stamps may exchange them for valid new issues at Chunghwa Post within six months after the rescission.
中文原文 郵政法第17條
中華郵政公司於報請主管機關核定後，將其發行之郵票廢止之。
但應於一個月前公告，並停止該郵票售賣。
持有前項廢止之郵票者，自廢止之日起六個月內，得向中華郵政公司換取新票。
但應於一個月前公告，並停止該郵票售賣。
持有前項廢止之郵票者，自廢止之日起六個月內，得向中華郵政公司換取新票。