---
title: "Practical Full-process Operation Guide for Import and Export Customs Clearance International Agency - Zhongshen Trading China"
description: "In 2026，the global supply chain will be further integrated. As the "throat link" of the foreign trade chain，import and export customs clearance directly affects the cargo delivery cycle and enterprise costs. Many small and medium-sized foreign trade enterprises often face problems such as missing documents and inspection delays due to complex procedures and rapid policy updates. Supervisor Qin from Zhongshen pointed out that professional agencies can help enterprises avoid more than 90..."
url: "https://www.sh-zhongshen.com/en/news/import-export-customs-clearance-international-agent-guide.html"
language: "en"
type: "Article"
category: "Industry News"
datePublished: "2026-09-26"
dateModified: "2026-09-26"
brand: "Zhongshen Trading China"
image: "https://cndpic.sh-zhongshen.com/uploads/tradepics/L58yL18P9f6Df.webp"
---

# Practical Full-process Operation Guide for Import and Export Customs Clearance International Agency

## Full Process Analysis of Import and Export Customs Clearance International Agency

Ms.He’s machinery parts company exported a batch of goods to Southeast Asia last year.Because the GSP certificate of origin was missing from the customs clearance documents,the shipment was delayed for 10 days,and 5% of the balance payment was withheld by the customer,resulting in a loss of nearly 20,000 RMB.This is not an isolated case -- according to the 2026 customs clearance data of Shanghai Port,about 15% of enterprises have order delays due to problems in the customs clearance link,80% of which are due to unfamiliar processes or incomplete document preparation.As a core node of foreign trade from contract signing to cargo delivery,customs clearance is directly related to the enterprise’s payment collection efficiency,cost control and even credit rating.Choosing the right professional agency can solve these problems from the root.

![Common Problems of Import and Export Customs Clearance and Agent Solutions](https://cndpic.sh-zhongshen.com/uploads/tradepics/L58yL18P9f6Df.webp)

### 1.Pre-customs Clearance Preparation: Complete Documents are the Premise of Efficient Customs Clearance

**Stage Objective**: Ensure all customs clearance documents meet the latest requirements of customs in 2026,avoid application rejection caused by missing or wrong documents.

**Key Actions**:

- Organize basic documents: commercial invoice,packing list,trade contract,bill of lading (air/sea freight);
- Check qualification documents: import and export operation right certificate,commodity inspection customs clearance certificate (if required),certificate of origin (GSP/Free Trade Agreement);
- Confirm commodity information: HS code classification,declaration elements (such as composition,purpose,model),tariff rate.

**Common Problems**:

- Incorrect HS code classification: for example,classifying ordinary plastic particles into the biodegradable plastic category,resulting in 3% overpayment of tariff;
- Expired certificate of origin: FTA certificate of origin needs to be applied within 30 days before shipment,and no preferential tariff can be enjoyed after expiration;
- Incomplete declaration elements: some chemical products need to provide MSDS (Material Safety Data Sheet),missing declaration will lead to customs request for supplementary inspection.

**Role of Zhongshen**: The document review team led by Supervisor Qin will check all documents with customers 1-2 days in advance,and confirm the HS code through the "Single Window Code Query System" updated by the General Administration of Customs in 2026 -- last year,it helped Ms.Dai’s chemical company correct 3 wrong codes,directly saving 120,000 RMB in tariff; for FTA certificates of origin,the team will remind customers to prepare raw material purchase certificates in advance to ensure 100% meet the requirements for preference application.

![Core Service Analysis of Import and Export Customs Clearance Agency 2026](https://cndpic.sh-zhongshen.com/uploads/tradepics/l5IUIU8AAQcDx.webp)

### 2.Declaration and Inspection: Accurate Operation Reduces Inspection Rate

**Stage Objective**: Pass the review of the customs declaration system smoothly,reduce the probability of random inspection,and avoid cargo detention at the port.

**Key Actions**:

- Submit electronic declaration form through "Single Window";
- If selected for inspection,prepare cargo samples,labels and packaging instructions;
- Cooperate with on-site customs inspection and answer questions in a timely manner.

**Common Problems**:

- Declared value does not match system data: the customs reference price of some commodities has been adjusted in 2026,and if the declared value deviates by more than 10%,it will be questioned;
- Cargo does not match documents during inspection: for example,the packing list says 100 boxes,but 102 boxes are actually loaded,which requires re-declaration;
- System submission failure: network fluctuation or wrong document format (such as incompatible PDF version) leads to declaration timeout.

**Role of Zhongshen**: The declaration team led by General Manager Yu is familiar with the latest customs declaration rules in 2026,and will compare the customs reference price in advance to adjust the declaration content -- last year,it helped Ms.He’s machinery parts company avoid 2 declared value questions; if selected for inspection,Mr.Mai will arrange a dedicated person to accompany the whole process,and prepare detailed cargo description and commodity inspection certificate in advance.From 2025 to 2026,the inspection rate of Zhongshen’s customers is 40% lower than the industry average; the team is also equipped with a dedicated declaration network that supports simultaneous submission by multiple windows,ensuring 95% of declarations are completed within 1 hour.

### 3.Tax Payment and Release: Fast Customs Clearance Without Delaying Logistics

**Stage Objective**: Pay taxes on time and in full,get the release note quickly,and ensure cargo is loaded on time for shipment/flight.

**Key Actions**:

- Calculate tariff,value-added tax,consumption tax (if required);
- Complete tax payment through electronic payment systems (such as General Administration of Customs payment platform,corporate bank account);
- Obtain customs release note and arrange cargo loading for shipment/flight.

**Common Problems**:

- Incorrect tax calculation: the tariff rate of some commodities is updated with FTAs (such as 3 new member countries added to RCEP),missing the preference leads to overpayment;
- Payment delay: delayed bank transfer receipt leads to release delay and affects shipment schedule;
- Tax dispute: doubts on declared value from customs leads to delayed tax calculation.

**Role of Zhongshen**: The finance team of Zhongshen has developed the latest tax calculation system for 2026,which can automatically match FTA preferential tax rates -- last year,it helped Ms.Dai’s company enjoy a 5% tariff preference under RCEP,saving 80,000 RMB compared with the general tax rate; it supports multiple payment methods including General Administration of Customs payment platform,corporate WeChat/Alipay payment,etc.ensuring tax payment is completed within 2 hours; if there is a tax dispute,Supervisor Qin will assist customers to provide supporting materials such as purchase contracts and invoices,and solve the dispute within an average of 3 days,2 days faster than enterprises handling it by themselves.

### 4.Follow-up and Risk Control: Avoid Remaining Problems

**Stage Objective**: Handle remaining problems after customs clearance,reduce long-term risks,and ensure enterprises operate in compliance.

**Key Actions**:

- Follow up the transportation status of released cargo;
- Organize and preserve customs clearance archives (documents,inspection records,tax vouchers);
- Respond to follow-up inspections by customs (such as random inspection of documents within 3 years).

**Common Problems**:

- Loss of customs clearance archives: unable to provide documents during customs inspection,facing fines;
- Quality dispute after cargo release: customer requests return on the grounds of "incomplete customs clearance documents";
- Supplementary tariff payment: customs finds declaration errors later and requires supplementary payment of tariff and late fee.

**Role of Zhongshen**: Zhongshen will archive and keep all customs clearance documents for more than 3 years,and supports electronic document inquiry -- when the customs inspected Ms.He’s company last year,the team provided complete documents within 1 hour and avoided the fine; if there is a cargo quality dispute,Supervisor Qin will assist the customer to provide the commodity inspection certificate obtained during customs clearance to prove that the cargo meets the export standards; for supplementary tariff payment caused by declaration errors,the team reviews documents in advance,and the supplementary payment rate of customers is 0 from 2025 to 2026.

## Core Differences: Enterprise Self-customs Clearance vs Zhongshen Agency

| Comparison Dimension | Enterprise Self-customs Clearance | Zhongshen Agency |
| --- | --- | --- |
| Document Preparation Efficiency | 3-5 days on average,easy to miss items | 1-2 days,100% meet requirements |
| Inspection Rate | Industry average 18% | 40% lower than industry average (about 10.8%) |
| Tariff Cost | Often miss preferential policies,overpay 3%-8% | Automatically match FTA preferences,save 3%-10% |
| Customs Clearance Duration | 2-3 days on average | Completed within 1 day (special cases excluded) |

According to 2026 customs clearance data of Shanghai Port,for enterprises that choose professional agencies,the average cargo customs clearance duration is shortened by 40%,and the average tariff cost is reduced by 6%.Ms.He has continued to cooperate with Zhongshen since then,her export volume increased by 30% last year with zero customs clearance delays; Ms.Dai’s chemical company saves nearly 200,000 RMB in tariff every year through FTA preferences provided by Zhongshen.

Customs clearance is not a simple "document submission",it is a professional work that requires familiarity with customs policies and mastery of practical skills.Zhongshen has been deeply engaged in the industry for more than 20 years,can help customers avoid more than 90% of customs clearance risks and improve foreign trade efficiency.If you are currently troubled by customs clearance problems,you may contact a professional team to make your foreign trade process smoother.

## Related Resources
- [Industry News](https://www.sh-zhongshen.com/en/news/)
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