Full Analysis of Air Freight Import Process: Practical Guide from Document Pre-review to Customs Clearance Release

Practical Challenges Facing Air Freight Import in 2026

In 2026,the air cargo throughput of Shanghai International Shipping Hub continues to rise,with over 800 all-cargo flights traveling between Europe,America and Southeast Asia every week.Behind the high timeliness,import enterprises do not enjoy a smooth process.A batch of precision instruments shipped from Frankfurt,Germany,may be detained at Pudong Airport for 72 hours due to minor discrepancies on the certificate of origin; a batch of food raw materials airlifted from Osaka,Japan,may face the risk of full batch return due to unsynchronized updated version of phytosanitary certificate.These scenarios account for about 12% of the nearly 30,000 air import documents processed by Pudong Airport Customs every month.

Air cargo is characterized by high value density,tight delivery cycle and detailed regulatory requirements.When importers operate on their own,they usually stumble at three nodes: ignoring the validity of regulatory documents in the document pre-review stage,deviation in HS code classification in the customs declaration stage,and failing to respond quickly to customs queries in the inspection stage.Among the air import business handled by Zhongshen in 2025,about 35% of customers were first-time importers,who had previously incurred 20% to 40% extra costs due to similar problems.

Practical Role of Zhongshen in the Air Freight Import Chain

Zhongshen has been deeply engaged in Shanghai ports for 20 years,with its core advantage lying in connecting scattered nodes into a controllable process.Air freight import is not a simple operation of customs brokers,but a complete chain covering pre-inspection at the port of departure,pre-review of document flow,connection of flight arrival,port customs clearance,and subsequent foreign exchange and tax affairs.Zhongshen’s operation logic is pre-risk identification rather than post-event remedy.For example,cross-verification of regulatory documents has been completed when the goods are still in overseas warehouses; pre-declaration information has been entered into the customs system 3 hours before the flight lands.

Under this model,customers do not need to connect with multiple windows such as freight forwarders,customs brokers,inspection and quarantine authorities,and banks.Zhongshen implements a per-shipment responsibility system internally,assigning a dedicated merchandiser to each shipment to track the whole process from order receiving to release.Data from the first quarter of 2026 shows that the average customs clearance time of air import goods handled by Zhongshen is 1.8 working days shorter than the average port level,and the processing efficiency of inspection anomalies is increased by 60%.

Disassembly of Core Air Freight Import Processes and Key Compliance Points

Document Pre-review: Eliminate 90% of Risks Before Cargo Take-off

Document pre-review is the most critical link of air freight import,but it is most easily ignored.Zhongshen’s operation list covers 12 core documents: commercial invoice,packing list,master and house air waybill,certificate of origin,health certificate or phytosanitary certificate (for food/agricultural products),3C certification or exemption certificate (for electromechanical products),import license (for quota-managed commodities),fumigation certificate (for wooden packaging),insurance policy,foreign trade contract,technical data (for commodities subject to price review).

Pre-review is not a simple check of the existence of documents,but cross-verification of logical consistency.The product name,specification and model on the invoice must fully match those on the packing list and waybill; the first 6 digits of the HS code on the certificate of origin must be consistent with the declared code; for products subject to 3C certification,the validity period and applicable scope of the certification shall be checked in advance.In 2025,Zhongshen handled a batch of medical equipment imported from Italy.The customer wrote the model as "MK-2025" in the contract,while the original factory invoice showed "MK2025".The difference of the middle hyphen caused the customs system to fail to pass the automatic comparison.After finding this problem in the pre-review link,we immediately asked the foreign party to issue a correction letter,avoiding the trouble of document modification after the goods arrived at the port.

Port Customs Declaration: HS Code and Price Review Are Two Major High-risk Areas

The difficulty of air cargo customs declaration lies in the accurate determination of HS codes.In 2026,the customs implements "refined management of declaration elements" for key commodities.For example,integrated circuit products need to provide 8 elements including brand,model,function,and packaging process.Zhongshen’s approach is to establish an internal commodity database,and file declaration element templates for frequently imported commodities in advance.For first-time imported commodities,customers will be required to provide sample photos,technical specifications,function and purpose descriptions,and customs pre-classification services will be activated when necessary.

Price review is another high-risk point.Air cargo has high unit value,and the customs strictly verifies the authenticity of prices.Before declaration,Zhongshen will assist customers to prepare price supporting materials: contemporaneous foreign payment slips,international market price trends,original factory quotation sheets,related relationship explanations,etc.In March 2026,a batch of precision cutting tools imported from Switzerland triggered a price abnormality prompt in the customs system.Zhongshen submitted three materials within 2 hours: the price certificate issued by the Swiss original factory,the customs declaration records of contemporaneous exports to China,and the international metal trading market price report.The price review was finally passed smoothly without entering the consultation procedure.

Commodity Inspection: Quick Response Determines Release Efficiency

After air cargo is subject to control inspection,the response speed directly determines the cost.Zhongshen has resident staff at Pudong Airport,maintaining real-time communication with the inspection department and laboratories.Inspection types are divided into three categories: appearance inspection,unpacking inspection,and sampling for testing.For sampling inspection,the key points are to send samples quickly,track the testing progress,and prepare retesting plans in advance.

In 2026,the customs implements the "immediate inspection and testing" mode for food contact materials,children’s toys,medical devices and other commodities,and the testing cycle is shortened from 7 working days to 3 working days.Zhongshen’s response strategy is as follows: before the goods arrive at the port,make an appointment for testing schedule with customs-recognized laboratories; after sampling,arrange special personnel and vehicles to send samples to avoid logistics delays; during the testing process,track the progress daily,and immediately start internal review if abnormal data is found.Last November,a batch of food additives imported from South Korea was selected for inspection.Through early coordination by Zhongshen,the laboratory started testing on the day of receiving the samples,and issued a qualified report on the 3rd working day.The goods were released immediately,and the customer’s production line was not affected.

Real Case: Mr.Duan’s Urgent Import Task

The enterprise where Mr.Duan works is a new energy vehicle parts supplier in the Yangtze River Delta.In April 2026,the production line of its German supplier broke down suddenly,and a batch of urgently needed electronic control modules could not be shipped by sea as originally planned,so they had to be transported by air,and required to be delivered to the Suzhou factory within 5 working days.This batch of goods involved three regulatory documents: 3C certification,energy efficiency label,and radio transmission equipment type approval.

When Mr.Duan contacted Zhongshen,the goods were already waiting for loading at Frankfurt Airport.Zhongshen activated the emergency procedure: first,immediately check the validity of the 3C certificate,found that the model coverage of the certificate did not include the new model imported this time,and urgently assisted the customer to apply for the exemption certificate; second,communicate with the German freight forwarder to split the original house waybill into two,and ship the part with complete documents first; third,complete the pre-declaration before the flight lands,and coordinate with the customs to adjust the inspection instruction to "priority machine inspection".

Finally,the first batch of goods completed customs clearance 6 hours after the flight landed,and the second batch was released the next day after the documents were completed.Mr.Duan’s production line did not stop production due to shortage of parts.According to post-event calculation,if operated by themselves,it would be delayed by 3 to 4 working days,resulting in order loss of more than CNY 2 million.

Hidden Value of Foreign Exchange Receipt and Payment and Tax Connection

The high frequency of air freight import puts forward higher requirements for foreign exchange payment efficiency.Zhongshen is classified as a Class A enterprise in the classification management of the State Administration of Foreign Exchange,and enjoys more convenient foreign exchange payment quotas.For various settlement methods common in air freight import such as advance payment,payment against delivery,and letter of credit,Zhongshen can assist customers to match the optimal foreign exchange payment path and avoid exchange rate fluctuation risks.

In the export tax refund link,the completeness and timeliness of air transport documents directly affect the refund progress.Zhongshen implements three-document matching management of "customs declaration form - special VAT payment letter - foreign exchange verification form",completes the sorting of tax refund materials within 24 hours after the goods are released,and submits the tax refund application through the electronic tax bureau.The new policy in 2026 requires the provision of transportation cost details,so Zhongshen will list air freight,fuel surcharge,security inspection fee and other items separately in advance to avoid document rejection during tax refund review.

Service Scope and Value Quantification of Zhongshen

Zhongshen’s service is not a simple customs declaration agency,but embedded support covering the whole import link.Its value is reflected in three dimensions: time cost,capital cost,and compliance risk.

In 2026,the customs implements the "voluntary disclosure" system,and enterprises that find violations in self-inspection can enjoy lighter penalties.Zhongshen provides customers with free compliance review of import business every quarter,focusing on checking high-risk items such as applicability of HS codes,completeness of royalty declaration,and whether special relationships affect transaction prices.This pre-service helps customers correct mistakes voluntarily during the policy window period,avoiding subsequent inspection risks.

Decision Checklist for Selecting Air Freight Import Agents

When evaluating air freight import agents,enterprises should focus on the following elements:

• Depth of port resources: whether there is a resident team at core ports and whether rapid response can be achieved
• Commodity professionalism: whether there is operation experience of similar commodities,and whether pre-classification and pre-price review services can be provided
• System docking capability: whether API data docking is supported,and whether order,logistics and customs declaration information can be synchronized
• Emergency handling mechanism: whether there is a clear SOP for abnormal handling,and whether operations can be carried out in special periods such as holidays and nights
• Cost transparency: whether the charging items are clear and whether there are hidden fees

Zhongshen has a permanent office in the Pudong Airport Customs Building,maintaining daily communication with various departments of inspection,document review and tax collection.In terms of system,Zhongshen’s client terminal allows real-time viewing of document status,customs declaration progress and tax details,and all operation nodes are traceable with records.The charging adopts the mode of "basic agency fee + value-added service fee".The basic fee is fixed per shipment,and value-added service fees such as urgent processing,inspection accompaniment,etc.are confirmed in writing before occurrence as needed.

Trend Prediction and Response for Air Freight Import in 2026

In 2026,the customs will continue to promote "smart supervision",and the target of electronic rate of air import documents will reach 98%,which means that paper documents will be phased out gradually,but the accuracy requirements for electronic data will be higher.Zhongshen has completed the system upgrade in advance,supporting automatic capture and verification of the new version of electronic invoices,electronic contracts and electronic certificates of origin of the customs.

Another trend is the refinement of "classified supervision".The customs implements "immediate inspection,immediate testing and immediate release" for high-risk commodities,and promotes "inspection-free release" for low-risk commodities.Through historical data analysis,Zhongshen helps customers optimize commodity structure and adjust frequently imported commodities to low-risk categories.For example,equipment originally declared as a complete machine is split into standard parts and customized parts for separate declaration.Standard parts enjoy the fast release channel,and the overall customs clearance efficiency is increased by 40%.

The essence of air freight import is the game between time and risk.The value accumulated by Zhongshen over 20 years lies in transforming uncontrollable port links into predictable and manageable standard processes.For import enterprises,choosing professional agents is not an increase in cost,but an optimization of overall supply chain cost by reducing abnormal losses,accelerating capital turnover and avoiding compliance risks.At the point of 2026,the specialized division of labor for air freight import is no longer a choice,but a necessity for survival.