Tianjin (Xingang)
North China's main container gateway, where Tianjin Customs lets DG containers be inspected at the factory and loaded on arrival within a booked port slot, and where the Bohai Bay freezes at its edges in mid-winter.
North America · sea freight from Tianjin
Shipping from Tianjin to San Francisco
Tianjin to San Francisco
Bohai Sea · Bohai Strait · Yellow Sea · Korea Strait · Sea of Japan · Tsugaru Strait · North Pacific
- TianjinChina origin
- Bohai Sea
- Bohai Strait
- Yellow Sea
- Korea Strait
- Sea of Japan
- Tsugaru Strait
- North Pacific
- San FranciscoUnited States
From Tianjin to San Francisco, cargo moves out of Tianjin's Xingang terminals, crosses the open North Pacific, where weather is the main risk, and is discharged at the port of San Francisco.
US entry is decided as much by paperwork filed in China as by anything at the port. 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
- Factory-supervised loading
- Bohai Bay winter ice
- ISF filer
- Supply-chain tracing file
- HTS code 8507.60
Route profile
How Tianjin → San Francisco differs from other lanes
Transpacific (North Pacific)
A great-circle route across the North Pacific, exposed to hurricane-force winter storms from October to April.
Where this route gets difficult
What to watch between Tianjin and San Francisco: 5 points
They run from the Tianjin terminal through the voyage to San Francisco and the United States import file.
- Origin port
Packaging appraisal comes first, even with Tianjin's quicker release
China requires use appraisal of export dangerous-goods packaging before the goods may be exported. Tianjin port's 2025 facilitation measures shortened packaging appraisal time for lithium battery exports through quick release, and Tianjin Port Group provides port services for lithium DG containers, but the appraisal certificate is still a precondition for the rest of the filing.
What Anxin does: We check at quotation that the packaging maker has its performance appraisal and apply for the use appraisal as soon as the packing is fixed, so the certificate is in hand before the MSA filing.
- Sea corridor
Winter storms with hurricane-force winds
NOAA's Ocean Prediction Center found hurricane-force winds (64 knots and above) in North Pacific mid-latitude storms in every month from October to April, peaking in December, with 15 to 23 such storms per season in its 2001–2004 records. They are not typhoons, so they do not follow the tropical calendar.
What Anxin does: For October–April sailings we check blocking and bracing on stuffing photos before sealing and confirm the full DG data are on the manifest.
- Import country
Section 301 at 25% on lithium-ion non-EV batteries from January 2026
USTR's 2024 review moved lithium-ion batteries of HTSUS 8507.60.0020 (the 'other', non-passenger-EV line) from a 7.5% to a 25% additional duty for entries from 1 January 2026; EV traction batteries under 8507.60.0010 reached 25% in 2024. Other China-specific duties can stack on top and change with little notice, so the landed cost depends on the exact classification and entry date.
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
Where the lithium came from: UFLPA questions at entry
Since August 2025 lithium has been a high-priority sector under the Uyghur Forced Labor Prevention Act, and CBP had by then stopped more than 16,700 shipments for UFLPA review. A container for San Francisco can be held while the importer shows where the cells, cathode material and lithium compounds were sourced.
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
E-bike batteries for California need an accredited test
Since 1 January 2026 California SB 1271 bars distributing or selling an e-bike, powered mobility device or its storage battery unless the battery has been tested by an accredited laboratory to a standard referenced in UL 2849 or EN 15194, and the laboratory's logo and the test standard are displayed. Importers must hand over the test report on request.
What Anxin does: For e-mobility batteries arriving at San Francisco for the California market, we ask for the accredited test report and label photos before booking.
Documents & compliance
Documents to line up for Tianjin → San Francisco
These documents come from the shipper, the manufacturer and the importer. Anxin checks them against each other; it does not issue test reports, safety data sheets or import certificates.
In Tianjin, before the box is loaded
- Packaging use-appraisal certificate issued before the MSA cargo report is filed
- 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)
Carrier and voyage
- Stuffing photos before, during and after packing, checked for blocking and bracing
- Lithium battery mark (SP188 cargo) or class 9 labels and placards
- Condition statement: new, used, damaged/defective (SP376) or for recycling (SP377)
For the importer in United States
- HTSUS classification from the broker (8507.60.0010 vs .0020 decides the Section 301 line)
- ISF filer named; stuffing location and consolidator sent right after packing
- CPSC certificate data and eFiling arrangement, if the product is subject to certification
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 Tianjin 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 Tianjin to San Francisco, and who acts
| Risk | Where | Mitigation | Who acts |
|---|---|---|---|
| Heavy-weather damage in a winter storm | North Pacific, Oct–Apr | CINS stuffing checks | Packing site, checked by Anxin |
| UFLPA detention pending supply-chain evidence | CBP at entry | Importer prepares tracing documents before shipping; consistent manufacturer data on all documents | Importer |
Questions
Questions about shipping from Tianjin to San Francisco
Yes. Under 49 CFR 171.25(b)(3), SP188 packages of UN3480 or UN3090 need the 'FORBIDDEN FOR TRANSPORT ABOARD PASSENGER AIRCRAFT' marking or a Cargo Aircraft Only label, and so do packages of batteries packed with or contained in equipment above 5 kg net. We check for it on carton photos before stuffing.
Weather is the main risk on this crossing: NOAA recorded hurricane-force North Pacific storms from October to April, most often in December. We tighten the packing checks for those sailings.
The green channel Tianjin MSA announced in July 2026 is for new-energy-vehicle cargo. For battery containers we plan on the normal review and file early, because Tianjin MSA has said long reviews under the traditional model often cost firms their vessel cut-off.
References
Official sources for this page
- 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)
- 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)
- Update: Certificates of Compliance and eFiling (U.S. Consumer Product Safety Commission)
- DHS designates steel, copper, lithium, caustic soda and red dates as UFLPA high-priority sectors (19 Aug 2025) (U.S. Department of Homeland Security)
- Hurricane force extratropical cyclones observed using QuikSCAT (Mariners Weather Log 49-1) (NOAA Ocean Prediction Center)
- Tianjin MSA opens a green channel for new-energy-vehicle shipments (Tianjin Economic-Technological Development Area (TEDA) Administration)
- Tianjin port 2025 cross-border trade facilitation measures (Tianjin Municipal Government (tjjz.gov.cn))
- 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 Tianjin
- 5ImportClearance at San Francisco
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After you send it
We check carrier acceptance for Tianjin → San Francisco before any booking, and ask for missing battery documents first.
All destinations from Tianjin · United States ports
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