Regulations for the Delegation of Certification of Aviation Products, Appliances and Parts Article 11

When Delegated Organizations and Designated Representatives conduct their business other than those delegated by CAA, there shall not be any conflict of interests with the latter.
中文原文 航空產品與其各項裝備及零組件檢定委託辦法第11條
檢定機構或檢定代表辦理其他業務時,不得與民航局委託之檢定業務有利害衝突之情形。

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