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North America · sea freight from Shanghai

Shipping from Shanghai to San Diego

Shanghai to San Diego

East China Sea · Korea Strait · Sea of Japan · Tsugaru Strait · North Pacific

Sea corridor illustration: Shanghai to San Diego, United States Simplified map with a curved corridor from Shanghai via East China Sea, Korea Strait, Sea of Japan, Tsugaru Strait, North Pacific to San Diego. Illustration only; not a vessel track or schedule. CHINANORTH AMERICAPACIFIC OCEAN Tsugaru StraitNorth Pacific ShanghaiCHINA ORIGIN San DiegoUNITED STATES ShanghaiEAST CHINA SEAJIANGSUZHEJIANGDEPARTURE AREA
  1. ShanghaiChina origin
  2. East China Sea
  3. Korea Strait
  4. Sea of Japan
  5. Tsugaru Strait
  6. North Pacific
  7. San DiegoUnited States
Geographic corridor illustration only, not a vessel track, port-call list or sailing schedule. The loading terminal, carrier, transshipment and dates are confirmed per shipment.

From Shanghai to San Diego, cargo moves from the Yangtze River Delta via Shanghai's Yangshan and Waigaoqiao terminals, crosses a great-circle crossing of the North Pacific, and is discharged at the port of San Diego.

US entry is decided as much by paperwork filed in China as by anything at the port. Below are 6 route-specific points to plan for, what we do about each, and the documents to have ready before booking.

What we need to start

  • Photo-verified packing certificate
  • Yangshan / Waigaoqiao export
  • ISF filer
  • Supply-chain tracing file
  • HTS code 8507.60
Ask about this route United States ports from Shanghai

Route profile

How Shanghai → San Diego differs from other lanes

Sea corridor

Transpacific (North Pacific)

A North Pacific crossing with no canal or chokepoint risk, but with a record of winter storms strong enough to collapse container stacks.

Import country

United States

US entry hinges on filings made in China (ISF and AMS), a traceable lithium supply chain and a road leg that is regulated as a hazmat move.

Yangshan deep-water port near Shanghai seen from a hillside, with container stacks and gantry cranes
A container ship under way off the Guatemalan coast

Where this route gets difficult

6 pain points from Shanghai to San Diego

They run from the Shanghai terminal through the voyage to San Diego and the United States import file.

  1. Origin port

    Shanghai checks during and after the voyage filing, not just before

    Shanghai MSA's Notice No. 4 of 2024 accepts either an inspector-signed packing certificate or a packing declaration from the stuffing company, but places the burden on the shipper: the batteries must meet the UN tests and be protected against damage, short circuit and accidental activation, and MSA runs spot checks during and after the process, with proof to be produced on request.

    What Anxin does: We keep a file per container (UN38.3 summary, SDS, packing photos, terminal protection details) so that proof can be produced the same day if Shanghai MSA asks for it after sailing.

  2. Origin port

    Shanghai's photo-verified packing certificate

    At Shanghai the packing inspector must upload photos taken before, during and after stuffing through the MSA's remote system, with face recognition and phone location on, before the electronic packing certificate goes out by EDI. A container is not loaded if the photos are missing, uploaded late, taken outside the verified stuffing site, or do not match the EDI cargo data. Stuffing sites outside Shanghai must be registered with Shanghai MSA.

    What Anxin does: We confirm that the stuffing site (including factory sites in Jiangsu or Zhejiang) is registered for Shanghai's remote system, and we check the photo upload against the EDI data before the packing certificate is sent.

  3. Sea corridor

    Hurricane-force winter storms, October to April

    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.

  4. 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 Shanghai (19 CFR 4.7). CBP does not issue the permit to unlade at San Diego 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 Shanghai, so the AMS filing and the DG manifest say the same thing.

  5. Import country

    California's battery-embedded product rules since January 2026

    Under California SB 1215, consumers have paid a recycling fee on covered battery-embedded products since 1 January 2026, and those products must be labelled with the maker's name or brand and the battery chemistry, or give that information on the maker's website. Manufacturers must also list covered and exempt products in an annual notice to retailers and CalRecycle.

    What Anxin does: If the goods landing at San Diego 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.

  6. Import country

    CPSC certificate data now filed at entry

    Since 8 July 2026, importers of consumer products that are subject to a CPSC certification requirement must electronically file the certificate data at entry; goods entered from a Foreign Trade Zone follow on 8 January 2027. Whether a battery-powered product is caught depends on the rules that apply to that product, not on the battery alone.

    What Anxin does: We ask whether the goods are consumer products that need a CPSC certificate and, if so, who files it, so that the question is settled before the goods arrive.

Locator map of San Diego, United StatesSan Diego
Locator map in the same projection as the corridor map; the dot marks the listed port position (32.72°N, 117.18°W).
Container ship being unloaded under red gantry cranes in Vancouver

Documents & compliance

Checklist for Shanghai → San Diego

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.

Before loading in Shanghai

  • Stuffing photos (before, during, after) uploaded to Shanghai MSA's remote system before the EDI packing certificate is sent
  • Stuffing site registered and geo-verified with Shanghai MSA; fire-safety proof for lithium DG warehouses
  • Per-container evidence file (UN38.3 summary, SDS, photos, short-circuit protection) kept for Shanghai MSA spot checks
  • 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)

For the shipping line

  • Stuffing photos before, during and after packing, checked for blocking and bracing
  • SP188 cartons: US 'forbidden aboard passenger aircraft' marking or CAO label
  • UN 38.3 test summary for every cell and battery type

For the importer in United States

  • CPSC certificate data and eFiling arrangement, if the product is subject to certification
  • Supply-chain tracing file for cells and lithium inputs, in case of a UFLPA request
  • 24-hour emergency response number (and provider reference) for the US road leg
A shrink-wrapped lithium-ion battery pack for a small electric vehicle
Before you book

Match the details first

We line up UN numbers, model names and package counts across the Shanghai 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 Diego.

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 table for Shanghai → San Diego

RiskWhereMitigationWho acts
Post-event spot check finds missing proofShanghai MSAEvidence file kept per containerShipper with Anxin
Container refused for loading: photos late, off-site or not matching EDI dataYangshan / WaigaoqiaoPhoto upload checked against EDI data before the certificate is sentPacking inspector, checked by Anxin
Heavy-weather damage in a winter stormNorth Pacific, Oct–AprCINS stuffing checksPacking site, checked by Anxin
Permit to unlade delayed for a late or inaccurate AMS manifestPort of dischargeFinal cargo data given to the carrier before the cut-offCarrier / NVOCC, with data from Anxin

Questions

Common questions on the Shanghai → San Diego route

For lithium-ion batteries classified in HTSUS 8507.60.0020 and entered from 1 January 2026, USTR set the Section 301 additional duty at 25%; EV traction batteries in 8507.60.0010 have been at 25% since 2024. Other duties can apply on top. The importer's customs broker confirms the classification and total duty; we make sure the invoice gives the broker enough detail to do so.

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.

It can, but Shanghai MSA checks the phone location of the packing photos against a verified stuffing site, and sites outside Shanghai must be registered with it. We confirm registration before the stuffing date; otherwise the container can be refused for loading.

References

Regulations and port sources cited

  1. 19 CFR 4.7: inward foreign manifest; advance filing of cargo declaration (24 hours before lading) (Legal Information Institute (e-CFR text))
  2. Section 301 Modifications Determination (Federal Register notice, Sept 2024) (Office of the U.S. Trade Representative)
  3. 49 CFR 171.25 – Additional requirements for the use of the IMDG Code (eCFR / PHMSA)
  4. 49 CFR 172.604: Emergency response telephone number (eCFR / PHMSA)
  5. Update: Certificates of Compliance and eFiling (U.S. Consumer Product Safety Commission)
  6. DHS designates steel, copper, lithium, caustic soda and red dates as UFLPA high-priority sectors (19 Aug 2025) (U.S. Department of Homeland Security)
  7. Hurricane force extratropical cyclones observed using QuikSCAT (Mariners Weather Log 49-1) (NOAA Ocean Prediction Center)
  8. Notice on the trial of the remote smart management system for DG container packing (Chinese), 12 November 2021 (Shanghai Maritime Safety Administration)
  9. Shanghai MSA Notice No. 4 of 2024 on declaring lithium battery dangerous-goods containers (Shanghai Maritime Safety Administration)

Next step

From enquiry to import

  1. 1EnquiryCargo, origin, destination
  2. 2Documents checkUN 38.3, SDS, packing
  3. 3BookingAfter carrier acceptance
  4. 4HandoverAt Shanghai
  5. 5ImportClearance at San Diego
Each step is confirmed in writing; an enquiry does not create a booking.

Ask about Shanghai → San Diego

Origin and destination are filled in; add the cargo facts you have.

Sending this form starts a review; it does not confirm carriage. Full enquiry form

After you send it

We check carrier acceptance for Shanghai → San Diego before any booking, and ask for missing battery documents first.

All destinations from Shanghai · United States ports

Trailers backed up to the loading docks of a warehouse

Need Shanghai → San Diego reviewed?

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

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