Asia – Baltic via the Danish straits
The Baltic is reached only through the Danish straits, where deep-draught ships are advised to take pilots, and its northern ports set ice-class restrictions every winter.
Europe · sea freight from Guangzhou
Guangzhou to Helsingborg
South China Sea · Malacca Strait · Indian Ocean · Bab-el-Mandeb · Suez Canal · Strait of Gibraltar · English Channel · Danish Straits
Lithium batteries for Helsingborg go from the Pearl River Delta via Nansha. On the way they face a long Europe voyage extended through the Danish straits into the Baltic, and they arrive at the port of Helsingborg.
The Swedish side adds the Naturvårdsverket register to the EU battery rules. 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
The Baltic is reached only through the Danish straits, where deep-draught ships are advised to take pilots, and its northern ports set ice-class restrictions every winter.
Naturvårdsverket registration under Ordinance 2025:813 since 1 January 2026, plus EU duties from CE marking to ADR on the road leg.


Where this route gets difficult
Loading port first, then the sea leg, then Helsingborg and the Sweden market.
In September 2026 Dongguan Customs and Dongguan MSA started sharing dangerous-goods packaging certificate data, described as a first in China, together with joint action against concealed and false declarations; Huangpu Customs also runs a joint 'lithium batteries going overseas' service against misdeclaration. A packaging certificate that does not match the MSA filing is now visible to both agencies.
What Anxin does: We check that the UN number, packaging code and quantities on the packaging certificate are exactly those on the MSA cargo report before either is submitted.
The Hong Kong Observatory puts the region's tropical cyclone season from June to October, busiest July to September. Nansha sits at the mouth of the Pearl River; a closed gate or a changed vessel means the DG filings and the packing certificate have to follow the box to a new sailing.
What Anxin does: From June to October we leave slack between stuffing and the DG cut-off at Nansha and refile quickly if the vessel changes.
Each winter Finland's Transport Infrastructure Agency restricts traffic to its ports so that only ships of a given ice class and deadweight receive icebreaker assistance; exemption requests are due three working days before arrival at the latest, and Baltic restrictions appear on baltice.org. During the restriction period a feeder lacking the ice class may be refused at Helsingborg.
What Anxin does: For winter shipments we check the restrictions in force on baltice.org for Helsingborg and ask the carrier to confirm that the final feeder has the required ice class before we book.
Since 1 January 2026 battery producers in Sweden must be registered with Naturvårdsverket under the supplementary ordinance SFS 2025:813. Producer responsibility organisations such as El-Kretsen can assist with the filing, though the producer stays responsible for the data.
What Anxin does: We ask the Swedish importer to confirm the registration is in place before booking, and pass on battery chemistry and weight data it may need for reporting.
Since 18 August 2024 a battery sold in the EU needs the CE marking and an EU declaration of conformity from its manufacturer. The declaration has to be available in the language Sweden requires, and the importer is the one who must check both before the goods are released for sale.
What Anxin does: We ask the manufacturer in China for the declaration of conformity and a photo of the CE marking on the battery or its packaging before loading, and pass them to the Sweden importer. We check that the documents exist and match the goods; we do not assess conformity.
A battery entering Sweden has to identify its importer: name, registered trade name or trade mark, postal address and a contact point belong on the battery itself, or on the packaging or accompanying document when the battery is too small. That text is fixed at the factory, not at Helsingborg.
What Anxin does: We pass the Sweden importer's name and address block to the manufacturer before the goods are packed in China and check carton or battery photos for it before loading.

Documents & compliance
Anxin reviews documents supplied by the shipper, manufacturer and importer; it does not issue test reports, safety data sheets or import certificates.

Most delays on this route start with a document that exists but does not match: a UN number, a model name or a package count that differs between the Guangzhou filings, the carrier booking and the Sweden import file. We check the three against each other before the booking is confirmed.
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 |
|---|---|---|---|
| Typhoon closure after filings are made | Nansha, Jun–Oct | Slack in stuffing date; prompt refiling | Anxin with the declarant |
| Mismatch between packaging certificate and MSA filing flagged by shared data | Dongguan / Nansha | Line-by-line check before submission | Anxin with the declarant |
| Feeder lacks the ice class required under winter restrictions | Northern Baltic, winter | Ice class confirmed at booking | Carrier, checked by Anxin |
| Producer not yet registered with Naturvårdsverket | Importer in Sweden | Registration confirmed before booking | Importer |
| Declaration of conformity missing or not in the required language | Importer in Sweden | Declaration and CE photo collected before loading | Manufacturer / importer |
Questions
The importer's: name, registered trade name or trade mark and postal address with a contact point, on the battery or, if it is too small, on the packaging or accompanying document.
Yes, but in the restriction period only ships of the required ice class and deadweight receive icebreaker assistance. Finland's agency publishes the restrictions on baltice.org, with exemption requests due at least three working days before arrival.
Nansha MSA has recommended around 25% for ESS batteries and measures against accidental activation. Treat it as the local authority's recommendation; the carrier's own acceptance conditions also apply.
References
Next step
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We check carrier acceptance for Guangzhou → Helsingborg before any booking, and ask for missing battery documents first.
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