In-depth Analysis of Full Import Customs Declaration Process and Key Quarantine Points for Australian Macadamia Nuts

Import Background and Industry Pain Points of Australian Macadamia Nuts

In Q1 2026,Australia’s export volume of macadamia nuts to China increased by 18% year-on-year,with over 30 TEUs of containers arriving at Shanghai Port daily.Behind this growth,the challenges faced by import enterprises are equally severe: the customs inspection rate remains at a high level of 12%,and the number of return shipment cases due to unqualified quarantine has increased by 23% compared to the same period last year.Ms.Ma,who runs a food trading company,encountered a batch of goods detained due to excessive aluminum phosphide residue at the beginning of the year,resulting in a loss of nearly 400,000 yuan.Such risks are not isolated cases.Imported nuts are subject to dual supervision of agricultural and forestry quarantine and food safety.Overseas production enterprises must complete registration and filing with the General Administration of Customs,and the products must be accompanied by official health certificates,plant quarantine certificates and full-item test reports.Many enterprises mistakenly believe that as long as the supplier provides documents,they can ignore the subtle differences between certificate formats,test items and China’s national standards,which is the main cause of clearance delays.

Core Role of Zhongshen in Import Nut Agency Services

Zhongshen has been deeply engaged in the field of customs declaration and commodity inspection for more than 20 years,and has a systematic understanding of the regulatory logic of nut products.Our value does not lie in simple document submission,but in advancing compliance review to the contract signing stage.When the customer confirms the purchase intention,we will first verify the registration status of overseas production enterprises in China,compare the product test report with the National Food Safety Standard for Nuts and Seeds GB 19300-2014,and forecast quarantine risks.In 2025,a new customer we served originally planned to purchase directly from a medium-sized Australian farm.After our verification,we found that the farm had not completed registration with the General Administration of Customs,and we promptly suggested changing the supplier,avoiding the dilemma of being unable to declare after the goods arrived at the port.This advance risk control model intercepts problems overseas,saving customers not only time costs,but also the capital security of the entire trade chain.

Full Process Breakdown of Imported Nut Customs Declaration

Phase 1: Document Pre-examination and Overseas Compliance Confirmation

Prior to cargo shipment,Zhongshen will launch a three-round document review mechanism.The first round verifies the qualifications of overseas manufacturers,confirming that their registration numbers are in valid status in the General Administration of Customs’ List of Food Exported to China by Countries/Regions That Meet the Evaluation and Review Requirements.The second round reviews the official certificate template: the plant quarantine certificate issued by the Australian authorities must include a specific statement: "This batch of goods complies with China’s control requirements for quarantine pests such as Mediterranean fruit fly".The absence of this statement will result in the certificate being deemed invalid.The third round compares test reports,focusing on indicators such as aflatoxin B1,peroxide value and acid value.In the 2026 customs spot checks on macadamia nuts,the detection limit of aflatoxin B1 has been tightened to 5μg/kg,and exceeding this limit will result in the goods being deemed unqualified.

We once handled a typical case: the test report provided by the customer used an Australian local laboratory template and did not indicate the ISO standard number based on which the test method was adopted.The customs technical department required supplementary methodological verification materials,resulting in 7 days of detention at the port.Now,Zhongshen will require overseas laboratories to use CNAS-accredited methods in advance and indicate the standard number in the report,fundamentally eliminating such problems.

Phase 2: Port Customs Declaration and Classification & Valuation

After the goods arrive at the port,the core challenges of the customs declaration link lie in commodity classification and price declaration.Macadamia nuts correspond to different tariff codes depending on whether they are shelled and whether they are roasted: 0802.6200 (unshelled,unroasted),0802.6900 (unshelled,roasted),0802.7200 (shelled,unroasted),0802.7900 (shelled,roasted).The tariff difference ranges from 3% to 10%.In 2026,the customs has increased the valuation efforts for nut products,especially related party transaction prices.If the declared unit price is more than 15% lower than the average market price in the same period,the system will automatically trigger a price query.

Zhongshen’s response strategy is to prepare complete pricing explanation materials in advance,including sales invoices from overseas manufacturers,price certificates for exports to third countries in the same period,and international futures market price data.The company of Mr.Peng we served was once subjected to valuation due to related party transactions.We submitted the monthly export guidance price released by the Australian Macadamia Society and the nut commodity index of the London Futures Exchange.Finally,the customs accepted our declared price,avoiding margin occupation.

Phase 3: Commodity Inspection Sampling and Laboratory Testing

This is the most uncertain link in the entire process.In 2026,the customs implemented 100% unpacking inspection on imported nuts,and at least 2kg of samples were taken from each batch and sent to the laboratory.Test items include: sensory inspection,moldy grain rate,heavy metals (lead,cadmium),pesticide residues (fumigants such as aluminum phosphide,methyl bromide),and mycotoxins (aflatoxin,ochratoxin A).The test cycle usually takes 7-10 working days,but Zhongshen can shorten the time to 5 working days through pre-declaration and the laboratory green channel.

The key control point lies in cooperation during the sampling link.Customs inspectors will check whether the goods have mold or insect damage on their appearance and whether the packaging is intact.We guide customers to use pallet stacking when loading containers,reserve inspection passages,and hang desiccants on the inner walls of containers.These details can significantly reduce the negative judgment of inspectors on the storage conditions of the goods.Last November,a batch of goods was suspected of improper storage due to water condensation on the inner walls of the container.We provided on-site full-course temperature and humidity monitoring records,proving that the water droplets were caused by temperature differences during unloading,avoiding expanded sampling.

Phase 4: Warehouse Management and Distribution Coordination

Obtaining the release order does not mean the end of the service.Nut products have strict requirements for storage environment: the temperature should be controlled at 15-20℃ and the relative humidity should be lower than 60%.Zhongshen has a constant temperature and humidity warehouse in the Shanghai Free Trade Zone,equipped with phosphine gas concentration monitoring equipment,and can provide customers with 14 days of free storage for waiting for test reports or handling follow-up issues.Our warehouse system is connected to the customs system to realize real-time synchronization of cargo status,and customers can view cargo location,temperature and humidity curve and inventory quantity through exclusive accounts.

For customers who need to distribute goods to inland areas,we provide an integrated "customs declaration - warehouse management - distribution" solution.The e-commerce company of Supervisor Shen purchases 10 containers each time,which need to be distributed to warehouses in Chengdu,Wuhan and Guangzhou in batches.After the goods are released,we directly complete sorting,labeling and repackaging in the warehouse,and then arrange full truckload transportation.Compared with customers picking up the goods by themselves and then sorting,we save 3 days of time and 15% of logistics costs.

Practical Risk Avoidance Case Sharing

At the end of 2025,Ms.Hou’s company imported 50 tons of macadamia nuts from Australia,planning to sell them before the Spring Festival.After the goods arrived at the port,the customs sampling test found that the moldy grain rate was 0.8%,exceeding the 0.5% limit specified in the GB 19300 standard.According to the conventional process,this batch of goods would face return or destruction.Zhongshen’s emergency response team immediately launched two measures: first,apply for re-inspection,requiring the customs to re-sample and emphasizing that there are subjective differences in the definition of "obvious mold" in the moldy grain judgment standard; second,simultaneously launch a screening and processing plan.We arranged manual sorting equipment in the bonded warehouse to reduce the moldy grain rate to 0.3%,and entrusted a third-party testing institution to issue a qualified report for the processed products.Finally,the customs agreed to release the goods in the way of "re-inspection qualified after processing".Ms.Hou only lost about 8% of the goods and retained most of the orders.

This case reveals a key point: the risks of imported nuts are not only in the customs declaration link,but also in the entire supply chain control.Afterwards,we helped Ms.Hou establish an on-site loading supervision system for overseas suppliers,requiring each batch to provide photos and videos before loading,and adding a quality deposit clause to the contract to advance risk responsibility.

Summary of Zhongshen’s Professional Value

Imported nut customs declaration is not a simple document transfer,but a test of comprehensive capabilities including regulation understanding,process control and risk response.Zhongshen’s 20 years of experience has accumulated three core advantages: first,forecasting capability,we can identify more than 80% of potential compliance problems at the contract signing stage; second,emergency response capability,with green channel resources of customs,commodity inspection and laboratories,we can respond quickly in abnormal situations; third,cost optimization capability,through classification planning,valuation preparation and warehouse integration,we can save customers 5%-15% of comprehensive costs.

In 2026,the General Administration of Customs plans to shorten the registration validity period of overseas manufacturers of imported food from 4 years to 3 years,and increase the on-site verification ratio.This means that the management of overseas suppliers will be more strict.Zhongshen has established a dynamic database of overseas suppliers,updating registration status,sampling records and credit ratings every month to provide data support for customers’ purchasing decisions.Choosing a professional agent essentially transforms uncertain risk costs into predictable service fees.For enterprises with an annual import volume of more than 5 million US dollars,the return on investment is obvious.

• Overseas manufacturers must complete registration and filing with the General Administration of Customs,and the registration number must be within the valid period
• The official plant quarantine certificate must include a specific statement,otherwise it will be deemed invalid
• The test report must adopt CNAS-accredited methods and indicate the test standard number
• 100% unpacking inspection will be implemented after the goods arrive at the port,and at least 2kg of samples will be taken from each batch
• The storage environment must be controlled at 15-20℃ and relative humidity lower than 60%
• It is recommended to purchase imported food safety liability insurance to cover losses caused by unqualified tests