Asia – Americas via the Panama Canal
A Panama Canal corridor whose Neopanamax draft depends on Gatun Lake levels, followed by the Caribbean during hurricane season.
North America · sea freight from Shenzhen
Shipping from Shenzhen to Texas City
Shenzhen to Texas City
South China Sea · Taiwan Strait · North Pacific · Eastern Pacific · Panama Canal · Caribbean Sea · Yucatán Channel · Gulf of Mexico
- ShenzhenChina origin
- South China Sea
- Taiwan Strait
- North Pacific
- Eastern Pacific
- Panama Canal
- Caribbean Sea
- Yucatán Channel
- Gulf of Mexico
- Texas CityUnited States
This route runs from Dongguan and Shenzhen factories via Yantian, where the one-box route had moved 409 battery containers by September 2026, then follows a Panama Canal corridor whose draft limit depends on Gatun Lake; at the far end is the port of Texas City.
The US side adds a 25% Section 301 duty line, forced-labour scrutiny of lithium supply chains and an ISF deadline that falls before loading. 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
- Typhoon season Jun–Oct
- Yantian / Shekou export
- Supply-chain tracing file
- HTS code 8507.60
- ISF filer
Route profile
How Shenzhen → Texas City differs from other lanes
United States
Two filings before loading, a Section 301 line set by classification, UFLPA supply-chain questions and a 15-day General Order clock after discharge.
Where this route gets difficult
What to watch between Shenzhen and Texas City: 5 points
Loading port first, then the sea leg, then Texas City and the United States market.
- Origin port
Typhoon season squeezes Shenzhen cut-offs
The Hong Kong Observatory puts the regional tropical cyclone season from June to October, busiest July to September. DG containers need their MSA filings approved and a signed packing certificate before loading, so a closed gate or a rolled vessel in typhoon weeks can push the whole document chain to a new sailing.
What Anxin does: From June to October we build slack into the stuffing date, confirm the DG cut-off with the carrier the week before loading, and resubmit filings promptly if the vessel changes.
- Sea corridor
North Pacific winter storms before the canal
NOAA's Ocean Prediction Center has recorded hurricane-force North Pacific storms in every month from October to April, most often in December. The Pacific leg to Panama crosses that ocean.
What Anxin does: For October–April sailings we check blocking and bracing on stuffing photos before sealing.
- Import country
UFLPA: lithium became a high-priority sector in August 2025
DHS added lithium to the Uyghur Forced Labor Prevention Act high-priority sectors in August 2025. By then CBP had stopped more than 16,700 shipments for UFLPA examination. For battery importers the practical effect is that CBP can ask where cells, cathode and lithium compounds came from, and a shipment waits while the importer answers.
What Anxin does: We tell the importer at quotation stage that supply-chain tracing may be requested, and keep manufacturer names and addresses consistent across invoice, packing list and ISF so the paper trail does not contradict itself.
- Import country
Which 8507.60 line decides the Section 301 duty
For lithium-ion batteries entered from 1 January 2026 USTR set the Section 301 additional duty on HTSUS 8507.60.0020 (the non-EV line) at 25%, the level EV batteries under 8507.60.0010 reached in 2024. Other China-specific duties can be added and change at short notice, so the classification and the entry date both move the landed cost at Texas City.
What Anxin does: We do not give duty rulings. We make sure the invoice describes chemistry, configuration and application precisely enough for the importer's customs broker to classify it, and we flag the entry date when a vessel's arrival could straddle a duty change.
- Import country
SP188 packages need an extra US marking
Small cells and batteries shipped under IMDG special provision 188 do not need a dangerous goods declaration at sea, but 49 CFR 171.25(b)(3) adds a US condition: each package of UN3480 or UN3090 must carry the 'FORBIDDEN FOR TRANSPORT ABOARD PASSENGER AIRCRAFT' marking or a Cargo Aircraft Only label, and so must packages of batteries with or in equipment above 5 kg net. Cartons printed for other markets often lack it.
What Anxin does: When the shipper declares SP188 for a Texas City booking, we check the carton photos for the US marking or CAO label before stuffing, not after discharge.
Documents & compliance
Documents to line up for Shenzhen → Texas City
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
- Transport-condition classification report where applicable
- 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
For the shipping line
- Canal routing and any canal-related surcharge confirmed for the booked vessel
- SP188 cartons: US 'forbidden aboard passenger aircraft' marking or CAO label
- UN 38.3 test summary for every cell and battery type
At the United States end
- HTSUS classification from the broker (8507.60.0010 vs .0020 decides the Section 301 line)
- 24-hour emergency response number (and provider reference) for the US road leg
- Importer of record and the licensed customs broker who will file the entry
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
What could go wrong from Shenzhen to Texas City, and who acts
| Risk | Where | Mitigation | Who acts |
|---|---|---|---|
| Typhoon closes terminals or delays the vessel after filings are made | Yantian / Shekou, Jun–Oct | Slack in stuffing date; refile quickly on vessel change | Anxin with the declarant |
| UFLPA detention pending supply-chain evidence | CBP at entry | Importer prepares tracing documents before shipping; consistent manufacturer data on all documents | Importer |
| SP188 cartons without the US marking | Discharge and onward trucking | Marking or CAO label checked on carton photos before stuffing | Shipper, checked by Anxin |
Questions
Common questions on the Shenzhen → Texas City route
No. The carrier must also send its cargo declaration through AMS 24 hours before loading, and CBP will not issue the permit to unlade without it.
1 June to 30 November, peaking around 10 September, according to the US National Hurricane Center.
Yes, provided a certified packing inspector supervises the stuffing and signs the container packing certificate. Since May 2026 Yantian and Dongguan MSA have also piloted joint factory inspection so the container can be loaded at Yantian without reopening; we check whether your shipment can use it.
References
Where these points come from
- 19 CFR 134.11: Country of origin marking required (Legal Information Institute (e-CFR text))
- 19 CFR 4.7: inward foreign manifest; advance filing of cargo declaration (24 hours before lading) (Legal Information Institute (e-CFR text))
- Section 301 Modifications Determination (Federal Register notice, Sept 2024) (Office of the U.S. Trade Representative)
- 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)
- DHS designates steel, copper, lithium, caustic soda and red dates as UFLPA high-priority sectors (19 Aug 2025) (U.S. Department of Homeland Security)
- Advisory to Shipping A-33-2026: Postponement of maximum authorized draft adjustment in the Neopanamax locks (Panama Canal Authority)
- Tropical Cyclone Climatology (NOAA National Hurricane Center)
- Hurricane force extratropical cyclones observed using QuikSCAT (Mariners Weather Log 49-1) (NOAA Ocean Prediction Center)
- Yantian MSA runs 'one-box' model for lithium battery sea exports (Chinese), 8 May 2026 (Shenzhen Development and Reform Commission (source: Shenzhen MSA))
- Forecasting yearly number of tropical cyclones affecting Hong Kong (tropical cyclone season June–October, most active July–September) (Hong Kong Observatory)
Next step
From enquiry to import
- 1EnquiryCargo, origin, destination
- 2Documents checkUN 38.3, SDS, packing
- 3BookingAfter carrier acceptance
- 4HandoverAt Shenzhen
- 5ImportClearance at Texas City
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After you send it
We check carrier acceptance for Shenzhen → Texas City before any booking, and ask for missing battery documents first.
All destinations from Shenzhen · United States ports
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