The Act Governing Bills Finance Business Article 6

A firm which is not a Bills House, shall not engage in the business of certifying, underwriting, brokering or trading Short-Term Bills.
中文原文 票券金融管理法第6條
非票券商,不得經營短期票券之簽證、承銷、經紀或自營業務。

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