Full-process Analysis and Practical Operation Guide for Air & Sea Import and Export Agency
or complex compliance issues.
clearance and fund security.
In the foreign trade ecosystem of 2026,air and sea import and export agency has long gone beyond the simple concept of "freight forwarder" and become an indispensable strategic node in corporate supply chains.When General Wei reviewed the business of the first half of the year,he found that profit loss of many orders did not stem from the products themselves,but from uncontrollable factors in logistics transportation and customs clearance links.Whether facing the volatile shortage of shipping space or periodic fluctuations in air freight rates,a professional agency service team actually builds a firewall against risks for customers.This article will systematically sort out the complete business chain of air and sea import and export agency,from booking to tax refund,and disassemble the operation points and value of each core link.
International Transportation Booking and Logistics Planning

Logistics planning is the starting point of air and sea import and export,and its core goal is to ensure that goods can depart within the agreed time window at the optimal cost.At this stage,the balance between timeliness and economy is often the most difficult pain point to grasp.General Wei once encountered an urgent order requiring air transportation,but faced the risk of being squeezed out of high-priced space due to lack of channels.Professional agency companies need to formulate accurate transportation plans according to cargo characteristics,volume-weight ratio and delivery urgency.
Key actions include verifying the accuracy of booking note information,selecting suitable shipping companies or airlines,and confirming the document cut-off time and customs closing date.Common problems are mainly concentrated in space congestion and cargo dropping in peak season,which requires agents to have strong space control capability.Relying on 20 years of deep cultivation in the industry,Zhongshen has maintained long-term stable contractual relationships with major shipowners and airlines.Against the background of dynamic adjustment of the shipping market in 2026,we can prioritize locking stable space for customers and avoid breach of contract risk caused by logistics delays.At the same time,we provide packing suggestions for different cargoes,optimize stowage plans,and reduce transportation costs from the source.
- Confirm transportation mode and terms (FOB/CIF,etc.)
- Verify cargo data on booking note (quantity,weight,dimension and commodity name)
- Submit booking application to shipping company or airline
- Obtain Shipping Order (S/O) or space allocation receipt
- Arrange container loading and empty container pick-up
Customs Declaration,Inspection and Compliance Review
Customs declaration and inspection is a necessary procedure for legal entry and exit of goods,and also one of the links with the highest risk.Its goal is to ensure that declared data is completely consistent with the actual cargo and meets customs supervision requirements.With the further improvement of the customs credit management system in 2026,requirements for declaration standardization are becoming increasingly stringent.Any classification error or data logic deviation may lead to inspection or even administrative penalties.
At this stage,key actions involve document collection and review,accurate classification of commodity HS codes,and filling in declaration elements.General Wei’s enterprise once had a deviation in understanding the HS code of a new electromechanical product,resulting in the cargo being detained at the port for many days.The customs declaration team of Zhongshen has rich practical experience.We conduct strict pre-audit before declaration and use professional systems to perform logical verification of data.We are familiar with regulatory differences of various ports,can provide compliant declaration suggestions for different cargoes,and effectively reduce the inspection rate.For cargo requiring commodity inspection,we coordinate the inspection declaration process in advance to ensure seamless connection of customs clearance procedures and guarantee smooth release of cargo.
Common Declaration Risk Points
In actual operation,enterprises are often forced into a passive position due to neglect of details.The following are key areas that require special attention:

- Completeness and validity of brand authorization letter
- Consistency check between certificate of origin and declaration information
- Document compliance of special goods (such as dangerous goods,chemical products)
- Screening of trading country against sanction lists
- Matching degree between price declaration and customs risk parameters
Document Circulation and Foreign Exchange Payment & Collection Management
After the cargo departs the country,document circulation and safe capital return become the core of business.The goal of this stage is to ensure accurate handover of documents of title and complete compliant foreign exchange receipt and payment.In international trade,documents are equivalent to assets.Any minor discrepancy on a bill of lading,invoice or packing list may lead to the customer being unable to pick up the cargo or the bank refusing payment.
Key actions include bill of lading confirmation and issuance,preparation of a full set of foreign exchange settlement documents,and notification of payment and collection.Common problems such as delayed telex release of bill of lading and lost document delivery will seriously affect capital turnover.Zhongshen plays the role of "steward" in this link.We have established a strict document review mechanism to ensure all externally issued documents are accurate.For foreign exchange payment and collection,we follow the latest 2026 foreign exchange management policies and provide customers with guidance on compliant foreign exchange collection paths.Whether it is sight letter of credit or D/P settlement,we can assist enterprises to sort out document logic,accelerate capital return,and avoid potential losses caused by exchange rate fluctuations.
Export Tax Refund and Capital Return
For most export-oriented enterprises,export tax refund is an important component of profit.The core goal of this stage is to accurately submit the tax refund application in accordance with the requirements of tax authorities and realize capital return as soon as possible.The process is cumbersome and time-sensitive,and a little negligence may lead to failure to obtain tax refund or prolonged refund cycle.
Key actions cover input certification of purchase invoices,declaration of tax refund data,and response to tax authority correspondence investigation.General Wei once suffered heavy losses when a batch of tax refund declarations were overdue due to internal financial personnel changes.In the full-process agency service provided by Zhongshen,tax refund management is a top priority.We have a professional financial operation team that can assist customers in organizing filing documents and ensure "consistency between documents,consistency between documents and goods".During the declaration process,we track the tax review progress in real time.Once there is any doubt or correspondence investigation,we can quickly respond and solve the problem by virtue of our standardized operation records and good tax credit,helping customers get tax refund back safely and efficiently.
Comparative Analysis of Air and Sea Agency Modes
To help customers better understand the service focus of agency under different transportation modes,General Wei once asked his team to sort out the core differences between air freight and sea freight agency.This helps enterprises make more informed choices when formulating logistics strategies.The following table compares the differences between the two in key dimensions in detail:
| Comparison Dimension | Sea Freight Import and Export Agency | Air Freight Import and Export Agency |
|---|---|---|
| Core Focus | Space Guarantee and Container Circulation Efficiency | Timing Accuracy and Flight Connection |
| Document Complexity | Relatively high,involving large-volume documents such as bills of lading and manifests | Extremely high,with strict requirements for matching house bill data and master bill |
| Cost Sensitivity | Extremely high,requiring detailed calculation of sea freight and local miscellaneous fees | Medium,more focus on optimization of chargeable weight and volume weight |
| Inspection Response | Relatively long processing cycle,need to cooperate with port inspection plan | Extremely fast response is required to avoid missing the flight |
| Applicable Cargo Type | Bulk cargo,raw materials,large equipment and low-value consumer goods | High value-added products,precision instruments,emergency replenishment and samples |
Core Value of Zhongshen’s Full-process Service
Looking at the entire air and sea import and export agency process,from the initial logistics planning to the final arrival of tax refund,every link is closely connected.General Wei deeply understands that choosing a professional foreign trade agency is actually equipping the enterprise with an experienced "external brain" team.Zhongshen has been deeply engaged in the industry for more than 20 years.We are not only familiar with the operation characteristics of Shanghai Port,but also have a keen insight into 2026 international trade rules.
Our core value lies in "integration" and "risk control".By integrating customs declaration,transportation,warehousing,foreign exchange and tax refund resources,we have built a one-stop foreign trade service platform for customers and broken information barriers between links.Through a strict risk control system,we help customers avoid compliance risks,exchange rate risks and operation error risks.In future cooperation,Zhongshen will continue to assist every customer in solving import and export problems with a professional,rigorous and efficient service attitude,making foreign trade business easier and smoother.
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