A Power of Attorney shall be attached upon submission of the goods declaration, except for the following cases:
1. A faxed Power of Attorney signed by the entrusted person for confirmation which replaces the original version.

2. Long-term entrusted relationship which is confirmed by Customs in advanced.
Apart from the conditions mentioned above, in the simplified declaration cases, Customs brokers could provide an affidavit first, then offer the Power of Attorney after the release of the express consignments. Besides, importers/exporters may deal with the authorization of customs declaration with a replied confirmation processed by real-name certified mobile device or with a logged confirmation by Citizen Personal Certificate.