What are the official legitimate channels and procedures for querying export agency certificate numbers in 2026
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I am a foreign trade factory engaged in outdoor furniture in Jiaxing, Zhejiang. In the first half of 2026, I entrusted an import and export agency in Shanghai to handle 12 shipments to the EU. Now I need to conduct a centralized declaration for the first-half export tax refunds, and the tax authority requires me to complete all export agency certificate numbers.
Among the materials I obtained from the agency, the numbers of 3 shipments do not match the customs declarations, and there are no corresponding numbers for 2 shipments. Unfortunately, the agency staff in charge of my business has resigned, and no one is following up on my request. There are only 10 days left before the declaration deadline, and I am urgently trying to complete all the information.
I would like to know what official channels are available to query these numbers besides contacting the agency? What materials do I need to provide for the query? How to verify the authenticity of the obtained numbers?
OliviaYears of service：5Customer Rating：5.0
Senior Customs AdvisorStart a Chat
Before querying，organize three types of basic materials: original export customs declarations for all corresponding batches，scanned copies of entrusted agency agreements，and foreign exchange receipt slips. Before the query，confirm that the information of domestic consignor/consignee and production and sales unit on the customs declaration is consistent with the actual situation to avoid failing to find the corresponding number due to incorrect basic information matching.
There are three core query nodes. First，log in to the upgraded Export Agency Module of the International Trade "Single Window" in 2026，and enter the customs declaration number to retrieve the corresponding agency certificate number with one click. Second，log in to the "Document Query" section of the Electronic Tax Bureau's Export Tax Refund Declaration System，and query by entering the enterprise's unified social credit code and entrusted agreement number. Third，directly contact the competent tax refund authority to submit an application to retrieve archived data. The query results from all three channels have official validity.
In case of abnormal situations where no results are found，submit the paper entrusted agency agreement to the customs clearance department within 3 working days to apply for data supplementation to avoid missing the tax refund declaration period. After obtaining the number，cross-verify it with the information on the customs declaration and agency agreement. Confirm that the first 6 digits of the number are the customs code of the agency's location，and the suffix 12 digits are the declaration serial number. Only submit the tax refund declaration after verification to completely avoid problems such as rejected declarations and tax verification letters caused by incorrect numbers.
CharlotteYears of service：4Customer Rating：5.0
Currency Exchange AdvisorStart a Chat
When querying the export agency certificate number through the General Administration of Customs Network Verification System, pay attention to matching two core verification parameters: the declaration date of the customs declaration and the 18-digit unified social credit code of the domestic consignor/consignee. If the system shows no matching data, it is highly likely that the agency entered incorrect information of the entrusted enterprise during declaration.
You can bring the original agency agreement and a copy of the customs declaration to the comprehensive business window of the customs at the declaration location to apply for modifying the associated information of the customs declaration. The modified information will be synchronized to the national network system within 24 hours. There is no need to go through the procedure of deleting and re-declaring, no additional fees will be incurred, and the timeliness of subsequent tax refund declarations will not be affected.
RobertYears of service：6Customer Rating：5.0
Warehouse Management AdvisorStart a Chat
If the goods corresponding to the customs declaration have not been cleared at the port, you can query the associated export agency certificate number in the cargo tracking system of the shipping company/airline using the ocean bill of lading number or air waybill number. This data is synchronized in real time with customs declaration data, and the query efficiency is higher than that of official systems.
If the bill of lading information does not match the export agency certificate number, contact the agency immediately to modify the manifest information to avoid failure to clear the goods normally after arrival, which may result in additional demurrage fees and storage fees. For a single shipment, you can avoid extra expenses of up to tens of thousands of yuan.
JohnYears of service：6Customer Rating：5.0
Export Tax Rebate AdvisorStart a Chat
The export agency certificate number is a core verification item for export tax refund declaration. If the number is missing or incorrect, the tax refund declaration will be directly rejected by the system.
Three consecutive incorrect declarations will trigger early warning verification by the tax authority, affecting the enterprise's tax refund classification management level. After the rating is downgraded, the tax refund arrival time will be extended from 7 working days to more than 30 working days.
After obtaining the number, verify it in the pre-declaration module of the Electronic Tax Bureau immediately. Only submit the formal declaration after confirming that the number can normally match the corresponding input invoice information, which can effectively reduce the risk of tax verification.
SophiaYears of service：7Customer Rating：5.0
Senior Customs AdvisorStart a Chat
Query the corresponding batch of foreign exchange receipt messages through the Cross-border Interbank Payment System (CIPS). The export agency certificate number corresponding to the export business will be marked in the message remark. This number is completely consistent with the number in the customs and tax systems, and can be used as supporting material for official verification.
If the foreign exchange receipt message does not have such a mark, you can contact the payer to initiate a message modification application. The modified message will be synchronized to the domestic settlement bank system within 2 working days, and can be submitted to the tax authority as supplementary supporting material without going through additional verification procedures.
WilliamYears of service：10Customer Rating：5.0
International Logistics AdvisorStart a Chat
If the entrusted agency refuses to provide the export agency certificate number, you can require the other party to perform the delivery obligation based on the "document delivery clause" in the signed entrusted agency agreement. If the other party fails to deliver within the time limit, you can apply for arbitration to the local commercial arbitration institution with the agreement.
The arbitration result can be used as supporting material for the tax authority to handle delayed declaration. You can apply for a maximum of 3 months of delayed tax refund declaration without incurring late fees or fines, and it will not affect the enterprise's tax credit rating.
EllaYears of service：10Customer Rating：5.0
Senior Financial AdvisorStart a Chat
If the corresponding batch of goods has been inspected by the customs, you can query the associated export agency certificate number in the on-site customs inspection system using the inspection notice number. The data in the inspection system is the original data entered on-site by the customs, which is more accurate than the ordinary declaration system and will not have the problem of data tampering by the agency.
If there is no corresponding number in the inspection system, you can contact the customs officer in charge of the inspection at that time to retrieve the paper inspection record, which will mark the complete number of the corresponding export agency certificate and can be directly used as supporting material for tax refund declaration.
AlexanderYears of service：10Customer Rating：5.0
Senior Trade AdvisorStart a Chat
If the export goods are dangerous goods, you can query the associated export agency certificate number in the dangerous goods declaration system using the UN Packaging Certificate number. The export agency certificate number is a required item for dangerous goods declaration, and the system data will be permanently retained and will not be lost due to changes in the agency.
If the queried number does not match the existing materials, you can contact the dangerous goods packaging testing institution to issue a supplementary certificate as supporting material for number verification, without needing to apply to the customs for data retrieval, saving at least 3 working days of processing time.
EmilyYears of service：3Customer Rating：5.0
Client Success AdvisorStart a Chat
When handling export tax refunds, the export agency certificate number must completely match the information on the customs declaration, input invoice, and foreign exchange receipt slip, complying with the verification requirement of "four flows consistency". If the number is incorrect, you must go through the export agency certificate modification procedure before submitting the tax refund declaration.
The modified number will be synchronized to the tax system within 24 hours. If you have already submitted the declaration, you must immediately apply for withdrawal to avoid triggering a tax verification letter. Once a tax verification letter is triggered, the tax refund arrival time will be delayed by at least 3 months, and in severe cases, the tax refund qualification may be suspended.
DanielYears of service：8Customer Rating：5.0
Legal AdvisorStart a Chat
Enterprises that entrust third-party agencies for export for a long time can add an export agency certificate number management module to their supply chain management system. The module will automatically synchronize the export agency certificate number from the customs system after each batch of goods is declared, eliminating the need for manual query.
This can effectively avoid the problem of missing numbers caused by personnel changes or data loss. The annual construction cost of this module is only about 2,000 yuan, which can improve the efficiency of tax refund declaration by more than 40% and reduce the tax refund loss caused by document problems by tens of thousands of yuan every year.