They had a mail service, although it was forofficialuse only.
建立了邮政系统，虽然只供官方使用。
2
You must have a Chinese name forofficialuse during your stay in Taiwan (the name will be used on your student ID card), and your Chinese name must remain consistent.
在台就学期间，您必须有一个固定使用之正式中文姓名（该中文姓名将印于学生证上以供身份查验之用）。
3
The consular bag may contain only official correspondence and documents or articles intended forofficialuse and must be sealed and bear visible external marks of its character.