By the Waymore Shipping Operations Team | Last updated: April 17, 2026 | 12 min read

Shipping Dangerous Goods from China: What's Allowed & What's Not

Most dangerous goods can be shipped from China by sea — all nine IMDG classes move under regulated conditions — while air freight accepts only a narrow subset, and lithium batteries sit somewhere in between with strict limits. What "allowed" always means is the same three things: correct classification, UN-specification packaging, and honest declaration with the right paperwork. What is never allowed is shipping hazardous cargo disguised as general cargo.

Dangerous goods is the most misunderstood corner of freight forwarding — and the one where mistakes carry the highest stakes. Perfume, phone chargers, power tools, spray cans, cleaning fluids, e-liquids, cosmetics, pool chemicals: thousands of everyday wholesale products are technically dangerous goods, and many importers only discover this when a carrier rejects their booking. Our DG desk in Shanghai handles classified cargo every week, and this guide explains the system plainly: which classes exist, what each mode accepts, what the paperwork involves, and what it costs.

What Are the Nine Classes of Dangerous Goods?

Sea transport of DG is governed by the International Maritime Dangerous Goods (IMDG) Code, maintained by the International Maritime Organization (IMO). Air transport follows the IATA Dangerous Goods Regulations, published by IATA. Both systems sort hazardous items into nine classes:

Notice how many ordinary wholesale products appear on this list. If your product contains a battery, an aerosol propellant, an alcohol-based liquid, or a corrosive ingredient, it almost certainly has a UN number and a class — even if your supplier has been "shipping it as normal cargo" for years. That last clause should worry you, not reassure you; a supplier's luck is not a compliance system.

What Documents Does DG Shipping from China Require?

The paperwork is where most DG shipments succeed or fail. Three documents form the core:

• Material Safety Data Sheet (MSDS/SDS). Produced by the manufacturer, listing composition, hazards, and handling requirements. It is the starting point for classification and every carrier will ask for it at booking.
• Dangerous Goods Declaration (DGD). A legally binding statement, signed by the shipper or an accredited DG declarant, confirming the UN number, class, packing group, quantity, and packaging type. This is what travels with the cargo and what inspectors check first.
• Classification certificate / transport appraisal report. For products whose hazard profile is not obvious — new formulations, batteries, chemicals — an approved testing body in China issues a report determining the proper UN number and packing group. Carriers increasingly insist on this rather than trusting an MSDS alone.

On top of these sit the usual export documents — commercial invoice, packing list, and the customs declaration described in our guide to China export customs documents. Timing is the operational difference: DG bookings must reach the carrier earlier than general cargo, typically 7–10 days before cut-off, because the carrier's DG department must approve each booking individually. Late DG paperwork is the most common reason classified cargo misses the vessel.

What's the Deal with Lithium Batteries?

Lithium batteries deserve their own section because they dominate the Class 9 volume out of China and cause the most confusion. Two UN numbers matter: UN3480 for standalone lithium-ion batteries and UN3481 for batteries packed with, or contained in, equipment. By sea, both are accepted with UN-specification packaging, state-of-charge provisions, correct marks and labels, and a signed declaration — a well-worn path that we ship weekly for electronics and e-commerce clients.

By air, the rules tighten sharply. Under IATA regulations, standalone lithium-ion batteries must generally be shipped at no more than a 30% state of charge, quantities per package are capped, and many passenger airlines refuse them altogether — meaning cargo aircraft only, limited acceptance, or prohibition depending on the airline and routing. Power banks face their own restrictions on both modes. The practical consequence: if your product line is battery-heavy, design your supply chain around sea freight, and allow the longer lead time in your inventory planning. Devices containing small installed batteries (UN3481) travel by air more easily, but always confirm with your forwarder before promising an air delivery date to your customer.

FCL or LCL for Dangerous Goods?

Importers often assume DG means a full container only, but LCL for classified cargo is both possible and common — with extra conditions. Consolidated DG boxes must segregate incompatible classes within the same container, use carriers and services that accept DG on LCL terms (fewer than for FCL), and allow longer consolidation lead times, since the DG warehouse holds cargo until a compatible mix is assembled. Many forwarders simply refuse DG LCL because the segregation rules demand real expertise; ours runs designated Class 9 (battery) consolidations on several lanes every week. For first-time classified shipments of small volume, expect LCL DG to carry proportionally higher fees than the FCL equivalent, and confirm the destination warehouse accepts the class too — an ocean of acceptance means nothing if the destination terminal refuses your box on arrival.

What Does DG Shipping Cost — and Which Ports Accept It?

Dangerous goods carry a premium, and it is charged at several layers. There is a DG surcharge on the ocean freight itself, scaled by class and UN number; there may be DG handling fees at origin and destination terminals; UN-spec packaging and the classification report are additional costs on the shipper's side; and the earlier booking requirement simply narrows your sailing options. For FCL, all-in DG premiums are commonly in the range of a few hundred dollars per container on routine classes — but high-hazard classes, and lanes through transhipment hubs that restrict DG, can cost substantially more. Our advice: get the DG quote before you confirm the purchase order, because the premium changes the landed cost calculation on exactly the products where margins matter most.

Port acceptance is the other variable importers overlook. Shanghai, Ningbo, Shenzhen, Qingdao, Xiamen, and Tianjin all handle DG, but each port — and each carrier — maintains its own restrictions by class, UN number, and even season. Class 1 and Class 7 face the tightest limits everywhere; Class 5.2 organic peroxides and some Class 2 gases are restricted on many services. A DG-experienced forwarder checks acceptance for your specific UN number across available services before quoting, rather than booking first and explaining the refusal later. This is also where cargo insurance conversations matter: standard marine policies exclude many DG risks, so classified cargo needs cover matched to its class — our overview of cargo insurance explains how cover works for higher-risk shipments.

How Do You Ship DG from China Safely? A Five-Step Process

1. Classify early. Send the MSDS to your forwarder at the quoting stage — not after production. The UN number determines everything: cost, port options, mode, and packaging.
2. Get tested. If there is no classification certificate, commission one from an approved body. New buyers frequently skip this and pay for it at carrier booking approval.
3. Package to spec. Use UN-certified packaging with correct inner fittings, marks, and labels. Factory cartons that "look fine" will be rejected at the DG warehouse.
4. Book 7–10 days early. DG approval, terminal slot, and the designated DG warehouse all add lead time. Build it into your production-to-shipment calendar.
5. Declare honestly, always. Misdeclared DG is the leading cause of shipboard container fires, carriers screen for it, and the legal liability plus voided insurance fall on the shipper of record. Under China Customs rules enforced by GACC, false declarations also carry administrative penalties.

Follow those five steps and DG shipping from China is routine — our DG desk runs classified FCL and LCL every week without incident. Choose a forwarder who treats classification, packaging, and declaration as a system rather than a box-ticking exercise, and the hazardous-goods label on your product line stops being a barrier. For everything non-DG in the same supply chain, our general import from China guide covers the full process end to end.

Frequently Asked Questions

What are the dangerous goods classes for shipping from China?

The IMDG Code, governed by the International Maritime Organization, divides dangerous goods into nine classes: explosives, gases, flammable liquids, flammable solids, oxidising substances, toxic and infectious substances, radioactive material, corrosives, and miscellaneous hazards (which includes lithium batteries). Most consumer goods shipped from China fall into Class 3, Class 8, or Class 9 — for example perfumes, cleaning products, and battery-powered devices.

Can lithium batteries be shipped from China?

Yes, under strict conditions. Sea freight accepts UN3480 (lithium-ion batteries) and UN3481 (batteries packed with or contained in equipment) with proper UN-specification packaging, correct marking and labelling, and a DG declaration. Air freight is far more restrictive — standalone lithium-ion batteries generally must ship at a 30% state of charge under IATA rules, and many airlines accept them only in limited quantities or not at all.

What documents do I need to ship dangerous goods from China?

The core document is the Dangerous Goods Declaration, signed by the shipper, alongside a Material Safety Data Sheet (MSDS/SDS) and, depending on the product, a classification certificate or transport appraisal report issued by an approved testing body in China. Carriers also require the DG booking to be submitted earlier than normal cargo — typically 7–10 days before cut-off — so documentation must be ready well in advance.

How much more does dangerous goods shipping cost?

DG surcharges vary by class, UN number, and carrier, but importers should generally budget a premium over general cargo rates — commonly in the range of a few hundred dollars per container for FCL, plus packaging and documentation costs. Some classes and UN numbers carry much higher premiums, and certain ports or transhipment hubs restrict specific classes entirely, which can add routing cost.

Can I hide dangerous goods as general cargo?

Never. Undeclared DG is a criminal offence in most jurisdictions and the leading cause of container ship fires. Carriers screen shipments, port state inspections detect misdeclared cargo, and the shipper of record bears the legal liability — plus insurance is void in a fire caused by undeclared goods. Declare correctly: the cost of compliance is a small fraction of the cost of a misdeclaration.

Do all Chinese ports accept dangerous goods?

Most major ports — Shanghai, Ningbo, Shenzhen, Qingdao, Xiamen, Tianjin — handle DG, but each has restrictions by class, UN number, and sometimes by season or terminal. Some classes require designated DG warehouses, and certain ports restrict highly hazardous classes altogether. An experienced DG forwarder confirms port acceptance for your specific UN number before booking rather than discovering a refusal at the gate.