Chengdu Air Import: Customs Clearance Reality Under Dual Hub Pattern

In 2026,Chengdu Shuangliu and Tianfu International Airports handle more than 200 tons of air import cargo every day.Precision chips from electronic manufacturing enterprises,clinical samples from biomedical companies,South American salmon from traders,these high-value,time-sensitive goods arrive from all over the world.But landing is only the first step,the real test starts at the cargo terminal.When enterprises handle import procedures independently,they most often encounter three types of problems: declaration rejected by system due to inconsistent documents,price review caused by commodity classification disputes,and soaring container detention fees triggered by high inspection rate.Especially after the Customs launched intelligent document checking in 2026,minor flaws in declaration details will be automatically captured by algorithms,and one error may trigger three consecutive inspections.

Zhongshen has resident teams at both airports in Chengdu,and its core value is to convert regulatory requirements into actionable operation lists for enterprises.For a precision instrument shipped by air from Germany,Zhongshen will check 12 details including 3C certification,energy efficiency label,and IPPC mark for wooden packaging before departure,instead of making remedies after cargo arrival.This pre-emptive management can compress customs clearance time by more than 60%,and keep the inspection rate below 5%.

Document Pre-audit: 12 Compliance Confirmations Before Flight Landing

The biggest time pressure for air import is that pre-declaration must be completed within 2 hours after flight landing,otherwise container detention fee at starting from 300 RMB per hour will be charged.Zhongshen’s operation team starts the pre-audit process immediately after receiving the shipping notice from the overseas supplier.

Core Document Completeness Check

Take a shipment of tulip bulbs imported by air from the Netherlands as an example.The floral trading company where Ms.Yu works needs to provide: certificate of origin,phytosanitary certificate,packing list,invoice,trade contract,bill of lading,and entry animal and plant quarantine permit.Zhongshen’s document checker will check page by page whether the Latin scientific name,quantity unit,and production batch number on the quarantine certificate are completely consistent with the permit.According to the new 2026 Customs regulation,plant-derived goods must be marked with gene editing label on the certificate,and missing this detail will lead to direct return shipment.

Commodity Classification Advance Ruling Application

Air cargo often involves tariff number disputes.An industrial camera integrated with an AI chip may be classified under heading 8525 (television cameras) or 8543 (other electronic equipment).Zhongshen will submit a classification advance ruling application to Chengdu Customs Tariff Department before cargo shipment.This process takes 7 working days,but avoids detention caused by classification disputes after arrival.2026 Customs data shows that the inspection rate of goods with advance ruling is 73% lower than that of goods without advance ruling.

Port Customs Declaration: Intelligent Declaration and Risk Parameter Avoidance

The "Air Express" system fully operated by Chengdu Customs in 2026 integrates manifest,declaration,inspection instructions and release information.Zhongshen’s declarers obtain the arrival report through the system 4 hours before flight landing and complete advance declaration.

Two-stage Access and Destination Inspection Declaration

For goods that require destination inspection,Zhongshen will accurately fill in the "two-stage access" code in the declaration remarks column.A batch of New Zealand cod liver oil imported by Ms.Yu’s company,which is a health food raw material,requires label rectification and sampling inspection at the designated warehouse in Longquanyi District after port release.Zhongshen coordinates transportation vehicles and warehouse reservations in advance,ensuring that the transfer of goods from the airport cargo terminal to the warehouse is seamlessly connected under Customs supervision.If the connection is delayed,the system will automatically trigger an abnormal alarm.

Container Detention Fee Control Node Management

Container detention fees for air import are calculated by hour.Zhongshen has an internal Golden 4-hour principle: tax payment and release instruction acquisition must be completed within 4 hours after flight landing.A strict node schedule is formulated as follows:

• 2hoursbeforeflightlanding:completepre-declaration
• 30minutesafterlanding:obtainarrivalreportandsubmitformaldeclaration
• 1hourafterdeclaration:completeelectronicpaymentoftaxesandfees
• 30minutesafterpayment:obtainreleaseinformationandarrangepick-up

In March 2026,one of Ms.Yu’s shipments had a 1-hour delay of arrival report due to airline system failure.Zhongshen activated the emergency plan,directly contacted the information department of the airport cargo terminal to manually enter data,and finally completed pick-up 10 minutes before the container detention fee started to accrue.

Commodity Inspection & Quarantine: Quarantine Approval and Sampling Rules for Special Goods

The inspection focus of Chengdu air import is concentrated on three major categories: animal and plant products,food and cosmetics,and medical devices.Each category has special quarantine requirements.

Registration Check for Overseas Food Production Enterprises

In 2026,the General Administration of Customs of China updated the Administrative Provisions on the Registration of Overseas Production Enterprises of Imported Food,requiring all overseas food production enterprises to be registered in the "CIFER" system.When accepting an order,the first thing Zhongshen does is check the supplier’s registration number.Ms.Yu once planned to import a batch of truffle chocolate from Italy by air.Zhongshen found that the registration scope of the chocolate manufacturer did not cover "truffle-containing products",and stopped the transaction in time,avoiding the loss of being unable to clear customs after cargo arrival.

Medical Device Registration Certificate and Compulsory Certification

Air imported medical devices are often for clinical emergency use,with extremely high timeliness requirements.But compliance requirements are equally strict: in addition to medical device registration certificate,3C certification (for some products) and special equipment type test report are also required.Zhongshen has built a medical device database,which can quickly determine whether a product is a R&D test product exempt from 3C certification.In May 2026,a tertiary hospital in Chengdu urgently imported a German-made ECMO by air.Zhongshen used the "clinically urgent medical device" green channel,and after submitting the hospital’s commitment letter and the certificate from the National Medical Products Administration,allowed supplementary submission of partial documents after port release,saving 18 hours for patient rescue.

Comparison of Quarantine Requirements for Different Categories of Air Imported Goods

Practical Case: Ms.Yu’s Fresh Cold Chain Import Customs Clearance

Ms.Yu’s company focuses on air import of South American salmon,with 3 direct flights from Santiago,Chile to Chengdu every week.In early 2026,Customs implemented the new policy of "two-stage access + conditional release" for imported chilled aquatic products.Zhongshen designed the "advance declaration + supervised warehouse pre-inspection" mode for Ms.Yu.

The specific operation is: after the flight departs,Zhongshen submits pre-declaration data and the scanned copy of Chile’s official sanitary certificate to Chengdu Shuangliu Airport Customs.Customs conducts electronic review,and completes tax calculation for low-risk goods before landing.After cargo landing,the goods are directly transported to the cold chain supervised warehouse cooperated with Zhongshen,where Customs officers conduct inspection and sampling,keeping the temperature below -18℃ throughout the whole process.Zhongshen arranges special personnel to send the samples to Chengdu Customs Technology Center.Before the test report is issued,the goods can be conditionally moved to Ms.Yu’s own warehouse,but cannot be sold.

Under this mode,the average time from landing to Ms.Yu’s warehouse is shortened from the original 48 hours to 6 hours.Most importantly,it avoids the 500 RMB per hour container detention fee and cold chain storage fee at the airport cargo terminal.In the first half of 2026,the import volume of Ms.Yu’s company increased by 40% year-on-year,but the customs clearance cost decreased by 25%.

Value of Professional Agency: Convert Uncertainty into Actionable Solutions

The complexity of Chengdu air import lies in that the requirements of Customs,inspection,airport,cargo terminal and taxation change dynamically,and there is no unified information release platform.Zhongshen’s 20 years of experience has essentially built a risk database and solution knowledge base.When Ms.Yu encountered the problem of blurred batch number printing on the packaging label of Chilean salmon,Zhongshen could immediately judge whether it affected customs clearance,and whether it required return,rectification or acceptance declaration.This judgment ability cannot be obtained from public channels,and can only be accumulated through practical processing of tens of thousands of shipments.

In 2026,air import competition is no longer price competition,but competition of time certainty and compliance certainty.Zhongshen does not only provide declaration form filling service,but provides whole-process management covering supply chain design,document pre-audit,node control and abnormal handling.For enterprises with annual import volume exceeding 5 million USD,this mode can compress average customs clearance time by 70%,and keep the inspection rate at one third of the industry average.More importantly,enterprises can focus on their core business instead of studying how to interpret the latest GAC announcement.