Full Process Analysis of Rough Stone Import Customs Clearance: A Practical Guide from Document Preparation to Cargo Release and Pickup

As a primary raw material for deep processing of stone,the import customs clearance process of rough stone directly affects the production scheduling and capital occupation of downstream processing enterprises.In 2026,the customs implements stricter verification of declaration elements for mineral products,and many enterprises encounter order rejection or inspection detention due to inconsistencies in document details.Zhongshen has been deeply engaged in rough stone import agency at Shanghai Port for more than 20 years,and has handled customs clearance practices for dozens of varieties including Italian Carrara White,Indian Black Galaxy,Brazilian Blue Crystal,etc.Taking the real case of Mr.Qin importing marble blanks from Italy as a clue,this article splits the complete process into five core stages,and explains the key actions and potential risks of each node clearly.

Stage 1: Import Access and Pre-audit of Documents

The goal is to confirm whether rough stone falls into the category of prohibited or restricted imports,and complete the compliance review of documents.Key actions include: verifying whether the origin of stone involves endangered species protection areas,confirming whether the radioactivity detection standards comply with the national standard GB6566-2022,and reviewing the quality certificate,packing list,and draft bill of lading provided by foreign suppliers.

When Mr.Qin imported for the first time,he encountered the problem that the quality certificate provided by the Italian exporter did not indicate the moisture content,which caused the customs to question whether the declared price included virtual weight from moisture.After receiving the order,Zhongshen sent a document correction list to the foreign party within 48 hours,requesting to supplement the density test report and net weight data after drying,avoiding container detention fees caused by document inconsistency after the cargo arrives at the port.

Common problems focus on three levels: first,the format of the certificate of origin is inconsistent with the customs record template; second,the radioactivity test certificate is not affixed with the CNAS accreditation mark; third,the packing list does not mark the serial number and gross and net weight of each piece of rough stone as required by the customs.Zhongshen’s role at this stage is reflected in the pre-standardization of document templates.All customers will receive a "Rough Stone Import Document Self-checklist",which is checked item by item before submission,reducing the order rejection rate from the industry average of 15% to less than 3%.

Stage 2: International Transportation and Port Arrival Connection

The goal is to match the optimal transportation plan and ensure the coordination of shipping schedule,port area plan and inspection yard location.Rough stone is usually transported in 20ft or 40ft containers,with high value per container and heavy weight,which has strict requirements for lashing and reinforcement.Zhongshen will advise customers to choose open top containers or flat rack containers according to the hardness and brittleness of rough stone,and obtain lashing photos for filing before shipment.

In 2026,Shanghai Port implements a new mixed stacking and isolation policy for dangerous goods and bulk cargo.Although rough stone is not dangerous goods,some varieties need to declare the storage location to the port area in advance due to trace radioactive elements.72 hours before the estimated arrival time of the ship,Zhongshen will submit the "Bulk Mineral Product Port Arrival Pre-declaration Form" through the Shanghai Single Window to lock the inspection yard location,avoiding long waiting for container transfer after the cargo is unloaded.

Common problems include: container rolling due to over-allocation by shipping companies,arrival time coinciding with holidays with no one to accept the order,and disputes over the calculation standard of port storage fees.Zhongshen’s countermeasures are: signing annual agreements with multiple shipping agents to ensure priority of shipping space; setting up a holiday emergency on-duty team to advance port fees in advance; clarifying the capping clause of storage fees in the contract.Mr.Qin’s cargo arrived at the port coinciding with the 2026 Spring Festival holiday,and it was the on-duty team of Zhongshen that completed the document exchange on New Year’s Eve,avoiding an additional container detention fee of 12,000 CNY.

Stage 3: Core Link of Customs Declaration and Inspection

The goal is to declare accurately and pass customs document review and inspection and quarantine quickly.The core difficulties in rough stone declaration lie in commodity classification and price verification.In 2026,the customs enables new declaration elements for subdivided categories such as marble,granite and sandstone,requiring 14 technical indicators such as ore deposit genesis,crystal grain size and color uniformity to be filled in.

After receiving Mr.Qin’s documents,the customs declaration team of Zhongshen first compared the "Stone HS Code Classification Guide",and classified the cargo under item 6802.9310,instead of 6802.9390 that the customer originally thought,with a 3 percentage point difference in tariff rate between the two tax numbers.Subsequently,in response to possible price questions from the customs,the split explanation of Italian mine ex-factory price,international freight and insurance premium,as well as the price filing data of similar products imported in the same period were prepared in advance.

In the inspection link,radioactivity detection is a mandatory item.Zhongshen has established direct data connection with the mineral product testing laboratory of Shanghai Yangshan Port,so sampling can be completed within 6 hours after the cargo arrives at the port,and the test report can be issued within 24 hours.If the test result exceeds the standard,Zhongshen will immediately launch the return plan,assist customers to negotiate with foreign suppliers for exchange,and avoid the cargo being destroyed due to overdue stay at the port.

Common problems focus on: order rejection due to missing declaration elements,price intercepted by the price review system,and long sampling and testing cycle.Through the internally developed customs declaration pre-audit system,Zhongshen carries out double verification by machine and manual before formal declaration,which can increase the declaration accuracy rate to 98.5%.

Stage 4: Tax and Fee Calculation and Foreign Exchange Processing

The goal is to calculate taxes and fees accurately and complete foreign payment in compliance.Rough stone import involves tariffs and value-added tax,and preferential certificates of origin are required for some varieties enjoying preferential tax rates under free trade agreements.In 2026,the customs implements new rules for the inclusion of royalties.If the importer pays additional mine exploitation right fees,it shall be included in the dutiable value.

In Mr.Qin’s case,in addition to the value of the cargo itself,it also involved the consulting fee for the ore dressing scheme paid to the Italian design company.The tax team of Zhongshen judged that this fee belongs to the category of royalties,and voluntarily made a supplementary declaration when declaring,avoiding the risk of fines during subsequent customs inspection.At the same time,using Zhongshen’s bank credit line,it advances taxes for customers to realize pick-up upon arrival,and the tax is paid within a 30-day credit period.

In terms of foreign exchange processing,Zhongshen provides multiple settlement methods such as TT,LC and DP.In response to the common problem of tight foreign exchange quota faced by rough stone importers,Zhongshen can assist customers to apply for trade financing from banks,convert spot foreign exchange payment into 90-day forward payment,and ease capital pressure.With the intensified fluctuation of RMB exchange rate in 2026,the foreign exchange team of Zhongshen will lock the foreign exchange purchase rate in advance to save exchange costs for customers.

Common problems include: overdue tax bill payment leading to late fees,inconsistency between foreign exchange declaration elements and customs declaration forms leading to failure to make foreign payment,and tax refund processing for cross-border RMB settlement.Zhongshen automatically captures customs declaration form data through the system to generate foreign payment application forms,ensuring consistency between all documents,and includes the due date of tax bills in the to-do reminders for customer service staff to eliminate omissions.

Stage 5: Cargo Release,Pickup and Follow-up Services

The goal is to pick up the cargo quickly and complete subsequent storage and processing arrangements.After customs release,Zhongshen will notify the customer within 30 minutes and synchronously send the pick-up order to the designated fleet.Rough stone is heavy cargo,which has high requirements for the load capacity of fleet vehicles.All logistics providers cooperating with Zhongshen are equipped with professional stone transport fleets,equipped with hydraulic lifting tailgates and lashing straps.

Mr.Qin’s cargo was released during the plum rain season in Shanghai.Zhongshen suggested that the customer temporarily store it in a bonded warehouse and deliver it to the processing plant in Jiangsu when the weather improves,avoiding surface rust spots caused by wetting of rough stone during transportation.Zhongshen’s warehouse management system supports customers to query inventory online,and the warehousing photo,storage location and outbound time of each piece of rough stone can be traced.

Follow-up services also include: acting as an agent to apply for the special payment letter of import value-added tax,assisting customers to handle export tax refund; providing annual analysis of import data to help customers optimize procurement rhythm; if quality problems occur within the warranty period,assisting in external claims.

Common problems focus on: the vehicle number is inconsistent with the record when picking up the cargo,so it is impossible to enter the port,the responsibility definition for cargo damage during storage is vague,and the import data cannot be effectively used for internal analysis of the enterprise.Zhongshen minimizes risks through a strict vehicle record verification process and warehouse insurance cooperated with Ping An of China.

Core Value of Zhongshen’s Services

Rough stone import customs clearance is not a simple document delivery,but a systematic project involving cross-department,cross-region and cross-time zone.Zhongshen’s 20 years of experience has precipitated into three irreplaceable capabilities: first,pre-compliance review capability,which eliminates more than 90% of order rejection risks before the cargo is loaded; second,resource coordination capability,which integrates scattered nodes such as shipping companies,port areas,customs,testing laboratories and fleets into a standardized service chain; third,financing capability,which reduces customers’ cash flow pressure through tax advance,forward foreign payment,trade financing and other methods.

After completing the first import,Mr.Qin handed over the annual procurement plan to Zhongshen for agency,importing 12 batches throughout the year,the average customs clearance time per shipment was reduced from the industry average of 5.2 days to 2.8 days,directly saving more than 150,000 CNY in total container detention fees and storage fees.More importantly,due to compliant declaration,it has not been inspected by the customs for two consecutive years,the enterprise credit rating has been upgraded to AA level,and it enjoys more customs clearance conveniences.

Choosing Zhongshen is essentially buying a certainty.Against the background of increasingly complex regulatory environment in 2026,the value of a professional agency does not lie in the low price of a single service,but in the delivery capability of no breakpoints,no blind spots and no hidden risks in the whole process.From document pre-audit to pick-up and delivery,each link has clear operation standards and responsible persons.Customers do not need to coordinate among customs,port areas and fleets,and only need to connect with the project manager of Zhongshen to grasp the cargo dynamics in real time and focus on their own production and operation.