Shenzhen (Yantian / Shekou)
Pearl River Delta battery cargo, often stuffed at factories in Dongguan or Huizhou, exported through Yantian or Shekou, with a typhoon season from June to October.
North America · sea freight from Shenzhen
Shipping from Shenzhen to Wilmington (Delaware)
Shenzhen to Wilmington (Delaware)
South China Sea · Taiwan Strait · North Pacific · Eastern Pacific · Panama Canal · Caribbean Sea · Windward Passage · US East Coast
- ShenzhenChina origin
- South China Sea
- Taiwan Strait
- North Pacific
- Eastern Pacific
- Panama Canal
- Caribbean Sea
- Windward Passage
- US East Coast
- Wilmington (Delaware)United States
This route runs from factories around the Pearl River Delta through Yantian or Shekou, then follows a Pacific crossing and a Panama Canal transit; at the far end is the port of Wilmington (Delaware).
The US side starts with two filings due before loading and ends with a road leg that must carry a live emergency number. This page sets out 5 points specific to this route, how Anxin handles each one and which documents to prepare.
What we need to start
- Yantian / Shekou export
- Typhoon season Jun–Oct
- HTS code 8507.60
- ISF filer
- Supply-chain tracing file
Route profile
What sets Shenzhen → Wilmington (Delaware) apart
Asia – Americas via the Panama Canal
Gatun Lake levels set how much a ship can load through Panama; the Caribbean leg then crosses hurricane waters from June to November.
Where this route gets difficult
What to watch between Shenzhen and Wilmington (Delaware): 5 points
Listed from loading in Shenzhen to import into United States, each with what we do about it.
- Origin port
Packaging certificates are now visible to both customs and MSA
Much of Shenzhen's battery cargo is made in Dongguan, home to more than 500 battery firms. In September 2026 Dongguan Customs and Dongguan MSA began sharing dangerous-goods packaging certificate data, described as a first in China, and committed to joint action against concealed and false declarations. The one-box route to Yantian, which had moved 409 containers by then, rests on that same record.
What Anxin does: We compare the packaging certificate with the MSA cargo report (UN number, packaging code, number of packages) before either goes in, so the shared data shows no gap.
- Sea corridor
North Atlantic winter storms off the US East Coast
The last leg north to Wilmington (Delaware) runs up the US East Coast in the North Atlantic, where NOAA's Ocean Prediction Center has recorded hurricane-force mid-latitude storms in every month from October to April, most often in January.
What Anxin does: For October–April arrivals we check blocking and bracing on stuffing photos before sealing, and allow slack in the delivery plan.
- Import country
Day 15 at the terminal: the General Order deadline
US customs rules give an unentered container 15 calendar days at the place of unlading. After that the carrier hands it to a bonded general order warehouse, with transport and storage at the consignee's risk and expense, and for DG cargo that needs specialized storage the port director decides where it is kept (19 CFR 4.37).
What Anxin does: We check with the importer's broker that the entry can be filed before arrival at Wilmington (Delaware), and chase any missing invoice or HTS detail while the ship is still at sea.
- Import country
The carrier's AMS manifest is due 24 hours before loading
Besides the importer's ISF, CBP must receive the carrier's electronic cargo declaration through AMS 24 hours before the container is laden in Shenzhen (19 CFR 4.7). CBP does not issue the permit to unlade at Wilmington (Delaware) until it has that declaration, and late, incomplete or inaccurate cargo data can delay or deny it.
What Anxin does: We give the carrier or NVOCC the final cargo description, HS code, UN number and package count before the documentation cut-off in Shenzhen, so the AMS filing and the DG manifest say the same thing.
- Import country
Demurrage and detention invoices must follow FMC rules
Battery containers held for DG checks or paperwork can run up demurrage and detention at Wilmington (Delaware). Under the FMC's billing rule, in force since May 2024, carriers and terminals must invoice within 30 days with accurate, complete information, or the charge is not payable, and the billed party has at least 30 days to ask for a waiver or refund. A 2025 court ruling set aside only the section on who may be billed.
What Anxin does: We keep the dates of discharge, availability and any DG hold for each container, so the importer can check invoices against them and dispute charges inside the FMC time limits.
Documents & compliance
Checklist for Shenzhen → Wilmington (Delaware)
Anxin reviews documents supplied by the shipper, manufacturer and importer; it does not issue test reports, safety data sheets or import certificates.
At the Shenzhen end
- Confirmation from the carrier of the DG cut-off at Yantian or Shekou, rechecked in typhoon weeks
- Load plan showing even weight distribution (no more than 60% of the cargo weight in either half of the container length)
- 'Made in China' marking on articles or containers checked on photos
- Safety data sheet and dangerous goods safe-carriage declaration for the MSA cargo report
- Customs packaging use-appraisal result for the dangerous goods packaging (with the maker's performance appraisal)
For the shipping line
- Canal routing and any canal-related surcharge confirmed for the booked vessel
- Dangerous goods declaration with UN number (3480 / 3481 / 3090 / 3091), proper shipping name and packing instruction (P903, or P908/P911 for damaged)
- Lithium battery mark (SP188 cargo) or class 9 labels and placards
At the United States end
- Importer of record and the licensed customs broker who will file the entry
- ISF filer named; stuffing location and consolidator sent right after packing
Before you book
One consistent file
A document that is present but inconsistent holds a booking as surely as a missing one: the UN number, model name or carton count reads differently in the Shenzhen export filings, the carrier booking and the United States import papers. We compare all three before confirming space.
Carriers we book with
Our booking panel; availability on this lane and acceptance of the declared UN numbers are confirmed for each booking. It does not mean that a listed carrier runs a direct service on this route. Carrier choice depends on the trade lane, cargo classification and each carrier's dangerous-goods acceptance at booking. The final carrier is confirmed on the booking.
Risk & mitigation
Risks on this route and who deals with them
| Risk | Where | Mitigation | Who acts |
|---|---|---|---|
| Packaging certificate and MSA filing disagree; shipment flagged | Dongguan → Yantian | Line-by-line comparison before filing | Anxin with the declarant |
| Permit to unlade delayed for a late or inaccurate AMS manifest | Port of discharge | Final cargo data given to the carrier before the cut-off | Carrier / NVOCC, with data from Anxin |
Questions
Shenzhen → Wilmington (Delaware): questions we are asked
Yes, if the container moves on a public highway. The IMDG waiver in 49 CFR 171.25(d)(2) only covers cargo that stays on the ship or moves between vessels; otherwise 49 CFR 172.604 requires a monitored number answered by someone with the emergency information. Goods shipped as 'Battery powered equipment' are exempt.
It can. In September 2026 the Panama Canal Authority postponed a planned draft cut in the Neopanamax locks because of Gatun Lake levels (advisory A-33-2026). We check the advisory in force when quoting.
Since September 2026 Dongguan Customs and Dongguan MSA share dangerous-goods packaging certificate data and act jointly against false declarations, so the packaging certificate and the MSA filing should match exactly.
References
Regulations and port sources cited
- 19 CFR 134.11: Country of origin marking required (Legal Information Institute (e-CFR text))
- 19 CFR 149.2 – Importer security filing: requirement and time of transmission (eCFR / CBP)
- 19 CFR 4.7: inward foreign manifest; advance filing of cargo declaration (24 hours before lading) (Legal Information Institute (e-CFR text))
- 49 CFR 171.25 – Additional requirements for the use of the IMDG Code (eCFR / PHMSA)
- 49 CFR 172.604: Emergency response telephone number (eCFR / PHMSA)
- Advisory to Shipping A-33-2026: Postponement of maximum authorized draft adjustment in the Neopanamax locks (Panama Canal Authority)
- Hurricane force extratropical cyclones observed using QuikSCAT (Mariners Weather Log 49-1) (NOAA Ocean Prediction Center)
- Forecasting yearly number of tropical cyclones affecting Hong Kong (tropical cyclone season June–October, most active July–September) (Hong Kong Observatory)
- Export dangerous goods packaging inspection: service guide (Chinese) (General Administration of Customs of China (Lanzhou Customs service guide))
Next step
From enquiry to import
- 1EnquiryCargo, origin, destination
- 2Documents checkUN 38.3, SDS, packing
- 3BookingAfter carrier acceptance
- 4HandoverAt Shenzhen
- 5ImportClearance at Wilmington (Delaware)
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After you send it
We check carrier acceptance for Shenzhen → Wilmington (Delaware) before any booking, and ask for missing battery documents first.
All destinations from Shenzhen · United States ports
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