Regulations Governing the Establishment and Management of Customs Brokers Article 31

Where the customs broker has dissolved or voluntarily closed operations, an official notification letter should be submitted to the customs authorities; license of said customs broker shall be cancelled within five days from the incidence date of the fact. In the event of a custom broker closure due to the cancellation of its customs broker operating license, broker is required to return the customs broker operating license issued by the customs authorities within five days following its license cancellation.A customs broker under operation suspension is required to notify the customs authorities of such suspension in writing; the same will be true upon the resumption of operations. A broker that processes customs clearance and customs duty payment matters during the period of suspension shall be regarded as having resumed operations.The aforementioned operation suspension period or a continuous period of no business activity record should not exceed six months. A one-time extension may be granted to customs brokers under special circumstances; maximum period of such extension is six months.
中文原文 報關業設置管理辦法第31條
報關業解散或自行停業時,應以書面向海關報備,並應於事實發生之日起五日內繳銷其報關業務證照。
經海關廢止報關業務證照而停業者,應於五日內將所領報關業務證照向海關繳銷。
報關業暫停營業者,應於停業前,以書面向海關報備,復業時亦同。
於報備停業期間復向海關辦理報關納稅手續者,視為已復業。
前項暫停營業或連續無營業紀錄之期間,不得逾六個月。
但情形特殊者得經海關核准展延一次,以六個月為限。

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