Nantong Import Customs Clearance Broker | Full Process Analysis of Natural Rubber Import

Background and Common Difficulties of Natural Rubber Import in Nantong

As an important import hub in the Yangtze River Delta,Nantong Port recorded a 12% increase in natural rubber import volume in 2026 compared with 2025,with most shipments coming from Southeast Asian rubber-producing countries such as Thailand and Indonesia.Many local rubber processing enterprises in Nantong reported that delivery is often delayed due to inconsistent origin documents and complicated port quarantine procedures during import,and some enterprises are even penalized with deposit for non-compliance.

The most prominent difficulties focus on three aspects: First,Southeast Asian suppliers are not familiar with the new "traceability QR code" requirement launched by China in 2026,leading to invalid documents; Second,Nantong Customs enforces strict declaration specifications for the "processing description" of natural rubber,and vague descriptions tend to trigger manual inspection; Third,the proportion of heavy metal residue testing in the commodity inspection link has increased,raising the risk of non-compliance.

Core Role of Zhongshen in Natural Rubber Import in Nantong

As a well-established import agency based in Shanghai,Zhongshen has built a dedicated document pre-audit team and port liaison specialists for natural rubber import business at Nantong Port.All team members have more than 5 years of experience in natural rubber import,can identify risk points in advance and cut down clearance time.General Manager Yao of a Nantong rubber products factory stated that his company’s natural rubber shipment was detained for 15 days due to document issues in 2025,after entrusting Zhongshen in 2026,the clearance efficiency increased by 60%.

Process Breakdown and Compliance Control of Natural Rubber Import Customs Clearance in Nantong

1.Document Pre-audit: Lock Origin Compliance Risks in Advance

The core difficulty of natural rubber import lies in the "dual compliance" of origin documents — the documents must meet both the quarantine requirements of Southeast Asian exporting countries and the requirements of China’s Implementation Regulations of the Import and Export Commodity Inspection Law.In 2026,China added the "traceability QR code" requirement for certificates of origin of natural rubber from Southeast Asia,and some Thai suppliers failed to update their systems in time,resulting in invalid documents.

Zhongshen’s support measures:

• Require suppliers to provide scanned copies of full set of documents 7 working days before shipment,including certificate of origin,phytosanitary certificate,and screenshot of traceability QR code
• Liaise with Nantong Customs pre-audit system,review documents against China’s 2026 edition access directory simultaneously,and immediately notify suppliers to make corrections if any problem is found (e.g.no official quarantine stamp on certificate of origin)

Case: In February 2026,the Indonesian natural rubber imported by General Manager Yao of a Nantong trading company was found with insufficient validity of phytosanitary certificate during the pre-audit stage.Zhongshen immediately coordinated with the supplier to update the document,avoiding the situation that the goods could not be declared after arrival at the port.

2.Port Customs Declaration: Accurately Match Nantong Customs Declaration Requirements

Nantong Customs’ declaration requirements for natural rubber have two core features: First,the "rubber tree species" (e.g.Hevea brasiliensis) must be clearly marked; Second,strict specifications are applied to "processing description" (e.g.whether the rubber has been processed via smoked sheet processing).Nantong Customs upgraded its declaration system in 2026,if the processing description is vague,it will trigger manual inspection and prolong clearance time.

Zhongshen’s support measures:

• Before declaration,a specialist will liaise with Nantong Customs Declaration Division to confirm the declaration elements of the current batch of goods (the "traceability QR code number" declaration item was added in 2026)
• Adopt the dual-track system of "pre-declaration + on-site declaration",submit the formal customs declaration only after pre-declaration is approved,to reduce the rejection rate

3.Commodity Inspection: Focus on Key Quarantine Items of Natural Rubber

Natural rubber is a plant-derived product.Nantong commodity inspection authority added "heavy metal residue testing" (e.g.lead,cadmium) in 2026,and the sampling proportion increased from 5% in 2025 to 8%.If the test fails,the goods need to be returned or destroyed,and the loss can reach 20% of the cargo value.

Case: In March 2026,the Thai smoked sheet rubber imported by a Nantong trading company was found with slightly excessive cadmium residue during inspection (China’s standard is ≤10mg/kg,the test result was 10.2mg/kg).Zhongshen immediately coordinated with the supplier to provide test reports of other batches from the same production lot,and applied for re-sampling.It was finally confirmed as a sampling error,avoiding goods return.

Core Value of Zhongshen’s Import Agency Service

For import enterprises in Nantong,the core value of choosing a professional agency lies in "cost reduction & efficiency improvement + risk avoidance":

• Average clearance time is reduced from 7 days to 3-4 days,capital occupation cost is cut by 40%
• Document error rate is reduced from 15% to below 2%,avoiding customs penalties
• Advanced coordination in commodity inspection shortens testing cycle from 5 days to 3 days

General Manager Yao stated that after entrusting Zhongshen in 2026,the total cost of his company’s natural rubber import dropped by 8% compared with 2025,which mainly benefited from improved clearance efficiency and effective risk avoidance.

Conclusion: The core of Nantong import customs clearance brokerage is to accurately match port requirements and product compliance standards.With over 20 years of industry experience,Zhongshen has established a full-link risk control system for key products such as natural rubber,helping Nantong enterprises complete import business efficiently.