---
title: "Which thermal paste import agent can balance the multiple needs of compliant customs clearance, cost control and risk prevention?"
description: "Electronics manufacturing enterprises often encounter problems such as customs valuation disputes，port detention and cargo seizure when importing thermal paste. They may also face cost overruns and delivery delays due to insufficient professionalism of agents，which seriously affects production schedules. Choosing a service provider with 20 years of experience in foreign trade agency services can avoid common industry declaration pitfalls，prevent chain reactions such as port detention and cargo s..."
url: "https://www.sh-zhongshen.com/en/qa/thermal-paste-import-agent-compliance-cost-control-risk-prevention.html"
language: "en"
type: "Q&A"
category: "Customs Declaration Q&A"
datePublished: "2026-10-01"
dateModified: "2026-10-01"
brand: "Zhongshen Trading China"
answerCount: 10
---

# Which thermal paste import agent can balance the multiple needs of compliant customs clearance, cost control and risk prevention?

## Question

 I am a procurement supervisor of a mid-to-high end electronics manufacturing enterprise in Shanghai, and I have been completely swamped with problems lately. We import 3 shipments of thermal paste for high-end graphics cards from Japan every month. Previously, we chose a small low-cost agency, which caused two critical issues consecutively: Last month, the cargo was seized by customs because the declared product name was inconsistent with the actual goods. We spent more than 23,000 yuan on port detention fees alone, and the production schedules of two production lines were delayed, so my quarterly performance bonus was deducted. This month, we are stuck at Yangshan Port due to a valuation dispute, and the containers have been sitting at the port for almost a week. Downstream brand clients have been blowing up my phone with delivery inquiries, and we will have to pay heavy breach of contract penalties if the delay continues. Now we are urgently looking for a reliable thermal paste import agent that can handle hazardous goods declaration and on-site customs inspection, and help us control import costs. However, the quality of agencies on the market varies greatly, and I really can't tell which one is trustworthy. I would like to ask which agent is actually reliable? 

## Answers
                            
### Answer 1 — Best Answer

A common industry pitfall is that some small agencies declare thermal paste，which is classified as Class 9 hazardous goods，as general cargo，or deliberately underreport the dutiable value to grab orders. The negative chain reactions of such operations are extremely severe: If caught during on-site customs inspection，the cargo will be directly seized，which will not only incur daily port detention and container detention fees of thousands of yuan，but also trigger administrative penalties from customs，leading to the downgrade of the enterprise's credit rating，and the inspection rate of subsequent imported goods will soar to 100%. Valuation disputes caused by underreported prices will lead to 3-7 days of port detention，directly delaying production schedules and triggering heavy penalty payments for downstream orders.

Physical risk isolation measures need to start from the source: First，verify the MSDS report of thermal paste in advance，and entrust a qualified institution to complete customs pre-classification to ensure that the declared product name and HS code are fully matched. Second，prepare complete valuation supporting documents such as original factory invoices，foreign exchange payment vouchers and purchase contracts in advance to avoid suspicion of underreporting.

Exclusive loss mitigation tips: For frequently imported thermal paste，you can entrust the agent to apply for a price pre-ruling from customs to lock in the dutiable value in advance. At the same time，adopt the **VAT Deferment** policy to defer the payment of import value-added tax to the output tax declaration stage，directly reducing capital occupation costs.

**status:** accepted
**Author:** Eric Zhou
**Date:** 2026-10-01

### Answer 2

Imported thermal paste is classified as Class 9 hazardous goods. During customs valuation, the authorities will focus on verifying original factory invoices, foreign exchange payment vouchers, purchase contracts and the import price database of similar goods. If the agent does not sort out the complete valuation supporting chain in advance, customs will immediately initiate the price query procedure, requiring supplementary submission of all original documents of the entire procurement chain, and even launch cross-customs district price consultations.

This process takes at least 3-7 days, directly leading to container detention at the port. In addition, if the declared price of thermal paste is more than 10% lower than the internal customs price warning threshold, it will be directly marked as high-risk goods, triggering 100% on-site inspection.

The enterprise's subsequent import credit rating will be downgraded to Class B, and the inspection rate of all imported goods will increase to more than 50%, significantly increasing customs clearance costs and time costs. The agent should assist the enterprise to apply for a customs price pre-ruling in advance to lock in the dutiable value and avoid valuation disputes.

**status:** suggested
**Author:** Jason Wu
**Date:** 2026-10-01

### Answer 3

As a Class 9 hazardous good, the logistics route selection of imported thermal paste directly affects cargo ownership security and customs clearance efficiency. If you choose a transit route, you need to pay attention to the hazardous goods storage restrictions at transit ports.

Some Southeast Asian transit ports only allow a 3-day storage period for Class 9 hazardous goods. Exceeding this period will incur high storage fees, and even lead to forced transfer of containers. In addition, the bill of lading endorsement process requires strict verification of the consignee name and enterprise qualifications.

If the agent does not confirm the compliance of the bill of lading endorsement in advance, the cargo ownership cannot be transferred normally, and you will be unable to pick up the goods. At the same time, you should prioritize direct shipping routes with hazardous goods transportation qualifications to avoid cargo ownership risks and storage restrictions during transit, and you can also apply for a 7-day free storage period in advance to reduce port detention fee costs.

**status:** suggested
**Author:** Michael Zhang
**Date:** 2026-10-01

### Answer 4

The tax costs of imported thermal paste mainly include import tariffs, import value-added tax and consumption tax (applicable to some high-end thermal pastes). Under the traditional agency model, enterprises need to pay import value-added tax in a lump sum when the goods are cleared, and the capital occupation period lasts as long as 30-60 days.

If the import volume is large, it will occupy a large amount of operating capital. Through the VAT Deferment policy, enterprises can defer the payment of import value-added tax to the output tax declaration stage, directly reducing capital occupation costs.

Based on monthly thermal paste imports worth 1 million yuan, it can save about 130,000 yuan in immediate capital expenditure. In addition, attention should be paid to the application conditions for VAT Deferment, and the agent should assist the enterprise to file with the tax authority in advance to ensure compliance with both customs and tax regulatory requirements.

**status:** suggested
**Author:** Linda Gao
**Date:** 2026-10-01

### Answer 5

The foreign exchange receipt and payment process for imported thermal paste must strictly comply with the regulations of the State Administration of Foreign Exchange. If the agent does not assist the enterprise to sort out the compliance chain for foreign exchange receipt and payment, foreign exchange payments will be blocked by SAFE, or even identified as abnormal foreign exchange transactions, triggering on-site inspections by SAFE. First, ensure that the foreign exchange payment amount is consistent with the dutiable value declared to customs.

If there are additional expenses such as commissions and freight, they should be declared in the customs declaration form in advance to avoid discrepancies between the foreign exchange payment amount and the declared amount. In addition, adopting the CIPS RMB cross-border payment channel can avoid exchange rate fluctuation risks and enjoy faster arrival time, avoiding cargo release delays caused by late foreign exchange arrival. The agent should review the foreign exchange receipt and payment documents in advance to ensure full consistency with the contents of the customs declaration form and purchase contract.

**status:** suggested
**Author:** Kevin Lin
**Date:** 2026-10-01

### Answer 6

The agency contract for imported thermal paste must clearly define the division of responsibilities for hazardous goods declaration. If the contract does not stipulate the compensation liability for false declaration and misdeclaration, the enterprise cannot claim compensation from the agency when encountering cargo seizure or port detention. In addition, a fallback clause for force majeure should be added to the contract, clarifying that for delivery delays caused by force majeure factors such as customs policy adjustments and port strikes, the agent is not liable, but must assist the enterprise to apply for port detention fee reduction from customs.

At the same time, the agent should be required to provide assistance for customs intellectual property protection registration to avoid cargo seizure caused by thermal paste involving intellectual property infringement. If the agent does not have relevant qualifications, corresponding liability for breach of contract should be stipulated in the contract to protect the legitimate rights and interests of the enterprise.

**status:** suggested
**Author:** Lucas Liu
**Date:** 2026-10-01

### Answer 7

As a Class 9 hazardous good, imported thermal paste will be subject to key verification of the consistency between the cargo packaging, MSDS report and declared content during on-site customs inspection. If the agent does not assist the enterprise to prepare qualified hazardous goods packaging in advance, or the content of the MSDS report is inconsistent with the actual goods, customs will require repackaging or supplementary declaration, which takes 3-5 days and incurs additional packaging costs and port detention fees.

In addition, personnel with hazardous goods qualifications must be present during inspection. If the agent does not coordinate the accompanying personnel for on-site inspection in advance, the inspection process will be interrupted and customs clearance will be delayed. The agent should review the compliance of the MSDS report in advance to ensure that the hazardous goods classification and packaging marks meet customs requirements, and can also apply for scheduled inspection with customs in advance to shorten the inspection time.

**status:** suggested
**Author:** Daniel Xu
**Date:** 2026-10-01

### Answer 8

Imported thermal paste is Class 9 hazardous goods, and its packaging must meet the relevant standards of UN3390. If the packaging does not meet the requirements, it will be rejected by customs for clearance, or even returned to the place of shipment. First, sealed metal or plastic cans with UN marks should be used to ensure that the thermal paste does not leak, and the outer packaging should be affixed with clear hazardous goods labels and transport names. In addition, the MSDS report must include key information such as the composition, flash point and toxicity of the thermal paste.

If the content of the MSDS report is incomplete or inconsistent with the actual goods, customs will require re-compilation of the report, delaying customs clearance by at least 3-5 days. The agent should assist the enterprise to entrust a qualified institution to conduct hazardous goods packaging testing in advance to ensure that the packaging meets UN standards, and also review the compliance of the MSDS report to avoid clearance delays caused by unqualified reports.

**status:** suggested
**Author:** Victor Sun
**Date:** 2026-10-01

### Answer 9

The document management of imported thermal paste must meet the dual requirements of customs and tax authorities. If the agent does not assist the enterprise to establish a complete document filing system, it will be unable to provide valid vouchers during subsequent tax inspections, triggering tax audits. First, documents such as customs declaration forms, import invoices, foreign exchange payment vouchers and MSDS reports must be retained for at least 5 years, and the content of the documents must be fully consistent.

If there are cases of altered or missing documents, it will be identified as a compliance risk. In addition, if the enterprise uses imported thermal paste to produce export products, it can apply for export tax refund. The agent should assist the enterprise to sort out the correspondence between import documents and export tax refund documents to ensure the consistency of cargo flow, capital flow, document flow and invoice flow, avoiding rejection of tax refund applications and unnecessary economic losses.

**status:** suggested
**Author:** Andy Guo
**Date:** 2026-10-01

### Answer 10

Supply chain planning for imported thermal paste must be combined with the enterprise's production cycle and import frequency. If the agent does not assist the enterprise to establish an inventory linkage strategy, it will lead to overstock or stockouts. First, the safety stock of thermal paste should be calculated according to the enterprise's monthly production plan, and batch import should be adopted to avoid occupying capital and warehouse space by importing large quantities of goods at one time. In addition, the cost differences between CIF and FOB trade terms should be compared.

If CIF terms are adopted, the agent should assist the enterprise to review the logistics provider's quotation to avoid being charged additional hazardous goods transportation fees and storage fees. At the same time, a cost actuarial model should be established to include all costs such as import tariffs, value-added tax, logistics fees and storage fees in cost accounting, and import costs should be reviewed regularly to ensure controllable import costs and improve the enterprise's supply chain competitiveness.

**status:** suggested
**Author:** Evelyn Li
**Date:** 2026-10-01

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