Full Process Analysis and Risk Control Guide for Shanghai PET Plastic Raw Material Import Agent

I am Manager Luo,with over 20 years of experience in import and export agency in Shanghai.Today I will talk about practical content directly without empty words: if you are importing or plan to import PET (Polyethylene Terephthalate) through Shanghai port,whether in the form of bottle flakes,fiber grade or film grade pellets,this article can help you avoid at least 80% of pitfalls in advance.PET import seems like general cargo,but in actual operation,customs’ key valuation points,declaration elements review standards,and policy differences from different source countries are all knowledge.

The First Step of PET Import Goes Wrong in HS Code

Many customers’ first import contracts have problems in commodity description and HS code.HS codes related to PET mainly include 3907.6100 (primary shape PET) and 3907.6900 (others).Wrong code selection will not only lead to different tariff rates (most-favored nation rate is usually 6.5% in 2026),but also greatly increase the probability of triggering controlled inspection.Last year,I encountered a case where Mr.You’s Korean supplier only wrote "PET Chips" on the invoice.Based on experience,we asked about specific intrinsic viscosity,bottle grade and food contact use,and finally confirmed it should be classified into a more precise sub-item,avoiding the situation where customs required laboratory identification due to general declaration,which would delay customs clearance by at least one week.

• Intrinsic Viscosity (IV Value): This is an important reference indicator for customs laboratory testing and valuation,which must be noted during declaration.
• Brand and Model: Such as SKCHEM’s SKYPET,Mitsubishi’s NOVAPET,etc.the brand and model must be consistent with the physical goods and original manufacturer’s information.
• Whether it is recycled material: Recycled PET (rPET) has stricter supervision,and extra attention should be paid to the solid waste import permit policy.The document review for such goods is extremely strict in 2026.

Putting these elements clearly in the contract and invoice is the foundation of smooth customs clearance.Vague description is equivalent to planting a mine for yourself.

Customs Valuation: Core of Controlling "Hidden Cost" in PET Import

PET is a bulk commodity with transparent price,so why will it be subject to customs valuation?The problem usually lies in transaction mode and related party relationship.

If you purchase from overseas manufacturers for a long time and use formula pricing or quarterly pricing,customs will require you to provide complete pricing mechanism instructions.For intra-group transactions,customs’ review on transfer pricing will be very detailed.In 2026,customs’ tax collection system and big data analysis ability will be stronger,and it will be more sensitive to capture price risks.

When we acted as agent for Manager Jiang’s chemical fiber company to import PET from Japan,we prepared three years of purchase contracts,international market reports (such as Platts price index),and group pricing policy memos.When customs issued the "Price Inquiry Notice",we submitted the full supporting materials on the same day,and the valuation link was passed within three days without any demurrage fees.

Conversely,if the price is significantly lower than the market price of the same origin and same quality in the same period,customs will probably initiate price verification,and the goods will enter the waiting area,where storage and container rental fees are incurred daily.

Commodity Inspection (Customs Inspection) and Document Compliance: Avoiding Mistakes in "Simple" Links

PET pellets usually do not belong to dangerous chemicals,but when customs inspect at the port,they will check whether they comply with the Commodity Inspection Law and national standards.The key documents are Material Safety Data Sheet (MSDS) and Non-dangerous Goods Identification Report.

Core Information of MSDS Must Be Accurate

Ms.Guan imported a batch of PET from Thailand,and the supplier provided a universal template MSDS,where the UN No.of Item 14 "Transport Information" was filled with "N/A",but the Chinese translation mistakenly wrote an existing dangerous goods UN number.This mistake almost caused the entire container to be required by the maritime department to be transported as illegally dangerous goods.We urgently coordinated the overseas supplier to re-issue the correct MSDS and notarized it to resolve the crisis.

Therefore,please ensure that MSDS,especially its Chinese translation,is accurate and consistent,and confirmed by the manufacturer’s seal.

Certificate of Origin and Tax Preferences

In 2026,the RCEP Agreement has been fully implemented.If you import PET from Japan,South Korea or ASEAN countries,goods that comply with the origin rules can enjoy tariff reduction with the RCEP Certificate of Origin.For example,the tariff rate of PET imported from South Korea may drop from 6.5% to 5.8% or lower.This saved money is pure profit.But the information on the certificate (manufacturer,exporter,commodity description,HS code) must match the customs declaration form 100%,without any mistake in a letter.

Overall Risk Control: Apart from Customs,These Costs and Risks Are Also Fatal

Only focusing on the customs declaration link is not enough.A mature import agency must help you control the entire chain risks.

• Exchange Loss: There is a time gap between payment and sales recovery.Exchange rate fluctuation will still be normal in 2026.We usually advise customers to hedge risks through financial instruments such as forward exchange lock according to the purchase rhythm.This is not our main business,but we will remind you to pay attention.
• Demurrage Fee Trap: After the arrival of the sea shipment,containers have free detention and storage periods.If customs clearance is delayed due to document issues,overdue fees may amount to hundreds of yuan per day.Our operation team will closely monitor the vessel’s dynamics and pre-review documents to ensure that all customs clearance documents are prepared before the goods arrive at the port,so as to maximize the compression of customs clearance time.
• Destination Inspection and Allocation: After customs clearance in Shanghai,if the goods need to be transported to other factories in East China,domestic transportation supervision will be involved.Relying on our cross-port linkage network nationwide,we can seamlessly connect cross-customs transfer or integrated declaration,ensuring that domestic logistics is compliant and efficient.

Finally,PET import seems standardized,but each customer’s supply chain situation,supplier cooperation and internal management process are different.The real value is not helping you fill a customs declaration form,but based on our in-depth understanding of customs rules,commodity characteristics and logistics nodes,to customize a stable and cost-controllable import solution from "overseas loading" to "domestic warehouse".If you are in Shanghai or the goods enter through Shanghai port,and have any specific questions,you can bring your contract and document draft,and we can discuss the details.