Xiamen (Haicang / Songyu)
Fujian's battery gateway, handling more than 90% of the province's lithium battery exports, with 10-minute online packaging appraisal for compliant products and the Taiwan Strait's winter monsoon on the doorstep.
North America · sea freight from Xiamen
Xiamen to San Francisco
Taiwan Strait · East China Sea · North Pacific
Lithium batteries for San Francisco go through Xiamen, the port for more than 90% of Fujian's lithium battery exports. On the way they face a North Pacific corridor with no canal or chokepoint, and they arrive at the port of San Francisco.
The United States applies Section 301 and UFLPA scrutiny to Chinese lithium batteries and wants its manifest data before loading. The 6 points below are particular to this lane; each comes with what we do and the paperwork it touches.
What we need to start
Route profile
Fujian's battery gateway, handling more than 90% of the province's lithium battery exports, with 10-minute online packaging appraisal for compliant products and the Taiwan Strait's winter monsoon on the doorstep.
A great-circle route across the North Pacific, exposed to hurricane-force winter storms from October to April.


Where this route gets difficult
In the order the cargo meets them: at the loading port, at sea, at San Francisco and at customs in United States.
Xiamen Customs now issues the packaging use-appraisal certificate for lithium batteries through the single window after automatic pre-review matching: about 10 minutes in the case reported in August 2026, against roughly half a day for the old on-site inspection. The fast path is only for products that pass pre-review as compliant and valid; anything that does not match goes back to inspection.
What Anxin does: We check the product data, UN38.3 summary and packaging codes against the application before it is submitted, so the certificate comes through pre-review rather than falling back to an on-site check.
Xiamen MSA offers pre-review of key DG documents, a pre-loading meeting at which ship, cargo owner, terminal and agent agree deck stowage and emergency measures, and a 'one ship, one plan' checklist from gate-in to sailing. In June 2026 it reported 104 energy-storage containers of 36 tonnes each loaded for Houston on a multipurpose ship.
What Anxin does: We send the key documents for pre-review before the formal filing and bring the stowage and emergency details the meeting will ask for.
NOAA's Ocean Prediction Center has recorded hurricane-force winds (64 knots or more) in mid-latitude North Pacific storms in every month from October to April, most often in December, with 15 to 23 such storms a season in its 2001–2004 study. These are not tropical systems, so they arrive outside typhoon season.
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.
US rules want a numeric emergency response telephone number on the shipping paper for battery cargo that leaves San Francisco by road, monitored for as long as the goods are in transport and answered by a person with the emergency information for UN3480 or UN3090. A call-back service fails the test (49 CFR 172.604); only the IMDG waiver for cargo that never touches a public highway avoids it.
What Anxin does: Before sailing we confirm who provides the 24-hour number for the US leg, usually the importer's emergency response provider, and put it with the contract reference on the DG documents we send to the trucker.
Besides the importer's ISF, CBP must receive the carrier's electronic cargo declaration through AMS 24 hours before the container is laden in Xiamen (19 CFR 4.7). CBP does not issue the permit to unlade at San Francisco 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 Xiamen, so the AMS filing and the DG manifest say the same thing.
California has added battery-embedded products to its electronic-waste program: from 1 January 2026 buyers pay a recycling fee at purchase, and each covered product must show the manufacturer's name or brand and the battery chemistry (or put it on the maker's website), with an annual product notice to CalRecycle and retailers.
What Anxin does: If the goods landing at San Francisco are devices with built-in batteries for sale in California, we ask the brand owner to confirm the chemistry labelling and the CalRecycle notice before shipping.

Documents & compliance
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.

We line up UN numbers, model names and package counts across the Xiamen filings, the booking with the carrier and the documents for United States before the booking is confirmed, so that a mismatch is fixed at origin rather than discovered at San Francisco.
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
| Risk | Where | Mitigation | Who acts |
|---|---|---|---|
| Application fails pre-review and falls back to on-site inspection | Xiamen Customs | Data checked against the application first | Anxin with the manufacturer |
| Heavy-weather damage in a winter storm | North Pacific, Oct–Apr | CINS stuffing checks | Packing site, checked by Anxin |
| 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 |
| Truck stopped without a monitored emergency number | Road leg from the port | Emergency response provider confirmed before sailing | Importer, checked by Anxin |
Questions
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.
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.
For products that pass automatic pre-review, Xiamen Customs issues it through the single window; the case reported in August 2026 took about 10 minutes, against about half a day for the old on-site inspection. Products that do not pass pre-review still need inspection.
References
Next step
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We check carrier acceptance for Xiamen → San Francisco before any booking, and ask for missing battery documents first.
All destinations from Xiamen · United States ports

Share the cargo facts; we review the route in writing.
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