The Act Governing Bills Finance Business Article 25
A Bills House that certifies, underwrites, brokers, trades, guarantees or endorses Short-Term Bills or bonds, and conducts other businesses, etc. shall, unless otherwise required by law or by the Competent Authority, keep confidential all information regarding a customer's finances, business, and trading activities.
中文原文 票券金融管理法第25條
票券商辦理短期票券或債券之簽證、承銷、經紀、自營、保證、背書或其他業務等，對於顧客之財務、業務或交易有關資料，除其他法律或主管機關另有規定者外，應保守祕密。