Financial Consumer Protection Act Article 9

Before a financial services enterprise enters into a contract with a financial consumer for the provision of financial products or services, it shall fully understand the information pertaining to the financial consumer in order to ascertain the suitability of those products or services to the financial consumer.Regulations governing what "information pertaining to the financial consumer" must be fully understood and what matters relating to "suitability" must be taken into account, as mentioned in the preceding paragraph, and other matters requiring compliance shall be prescribed by the competent authority.
中文原文 金融消費者保護法第9條
金融服務業與金融消費者訂立提供金融商品或服務之契約前,應充分瞭解金融消費者之相關資料,以確保該商品或服務對金融消費者之適合度。
前項應充分瞭解之金融消費者相關資料、適合度應考量之事項及其他應遵行事項之辦法,由主管機關定之。

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