Postal Remittances and Savings Act Article 14
When a depositor makes a first deposit, the branch office that receives it should (depending upon the type of deposit) issue a postal savings passbook or a receipt to the depositor as an evidential document.
中文原文 郵政儲金匯兌法第14條
郵政儲金初次存入時，由存入之郵局，按其種類分別發給郵政儲金簿或單據，作為憑證。