National Palace Museum Regulations for the Acquisition of Cultural Relics Article 13

The names of the private donors (and/or their studios) and the donating institutions will be duly acknowledged when the donated cultural relics are on view in exhibitions or featured in publications.
中文原文 國立故宮博物院藏品徵集辦法第13條
捐贈之文物,於展出或出版時,得標明捐贈者之姓名、堂號或機構名稱等。

English translation for reference only; the Chinese text prevails. Not legal advice.