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Dangerous Goods Freight — Frequently Asked Questions

Class 2-9 DG cargo shipping from China: classification, documentation, packaging, carrier booking, and compliance

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DG Classification & DocumentationCarrier & Port StrategyShipping Process & Safety

DG Classification & Documentation

What dangerous goods classes can you ship from China?

We handle IMDG Classes 2 through 9: Class 2 (Gases), Class 3 (Flammable Liquids), Class 4 (Flammable Solids), Class 5 (Oxidizing Substances), Class 6 (Toxic Substances), Class 7 (Radioactive — limited), Class 8 (Corrosives), and Class 9 (Miscellaneous DG, including UN3536 lithium battery energy storage systems). We ship via sea, air, and rail — with full IMDG/IATA DGR/RID compliance for each mode.

What is UN3536 and how is it different from other lithium battery classifications?

UN3536 covers lithium batteries installed in cargo transport units — typically large-scale containerized Battery Energy Storage Systems (BESS). Unlike UN3480 (lithium-ion batteries shipped standalone) or UN3481 (batteries packed with equipment), UN3536 covers batteries that are permanently installed in a structure (the container itself). This classification has specific documentation, packaging, and handling requirements distinct from other lithium battery categories. We have shipped 1,000+ TEU of UN3536 cargo — it is our specialty.

What documents are required for DG sea freight from China?

A standard DG export requires: (1) MSDS (Material Safety Data Sheet, per GHS standards), (2) DG Packaging Certificate (危包证, confirming packaging meets UN performance standards), (3) Maritime DG Declaration (submitted to the maritime authority 24-48 hours before loading), (4) Port Filing Approval (required by Chinese ports for DG cargo), (5) Packing List with DG classification noted, (6) Commercial Invoice, and (7) Carrier DG Booking Confirmation. We handle the entire document chain — pre-auditing every document before submission to ensure zero rejections.

How long does it take to get a DG Packaging Certificate (危包证)?

Industry standard is 7-10 working days. Our accelerated process delivers in 3 working days for most DG classes. This is possible because we manage the entire chain — packaging performance testing coordination, application preparation, and authority submission — in-house, without relying on third-party agents. For time-critical shipments, the 3-day turnaround can be the difference between making a sailing and waiting two weeks for the next one.

Carrier & Port Strategy

Which shipping lines accept DG cargo from China?

We maintain DG-approved relationships with 10+ major carriers: MSK (Maersk), HPL (Hapag-Lloyd), MSC, COSCO, HMM, OOCL, EMC (Evergreen), YML (Yang Ming), and others. Each carrier has different DG acceptance policies — varying by DG class, route, and season. Our team knows which carrier accepts which DG class on which route, and books accordingly. During peak season when DG space is the first to be cut, our allocated space agreements protect our clients' shipments.

Which Chinese port should I use for DG exports?

We offer three-port optionality: Qingdao (primary — strongest DG infrastructure in northern China, dedicated DG storage yards, highest sailing frequency to Asia/South America/Africa), Shanghai (best for Europe and North America routes, widest carrier choice), and Tianjin (optimal for northern China origins and Russia/Central Asia destinations). We match cargo attributes, DG class, destination, and timeline to the optimal port — not just the closest one.

Why do some carriers suddenly suspend DG acceptance on certain routes?

Carrier DG policy changes are becoming more frequent, driven by: insurance cost escalation (a single container fire can trigger claims exceeding $100 million), vessel capacity optimization (non-DG cargo generates higher revenue per slot without additional risk), and specific route incidents that cause carriers to temporarily suspend DG on affected corridors. This is why we maintain relationships with 10+ carriers — when one suspends, we have immediate alternatives. We also provide early warning of pending carrier policy changes.

Shipping Process & Safety

How do you ensure DG shipment safety?

Our safety system operates on four pillars: (1) Pre-shipment compliance audit — every document reviewed by our in-house DG specialist before authority submission. (2) Packaging verification — we confirm that packaging matches the DG certificate specifications before cargo leaves the factory. (3) Carrier compatibility check — we verify that the specific vessel and stowage position are approved for the DG class and quantity. (4) Real-time monitoring — DG cargo milestones tracked and reported daily. Result: zero DG incidents across 1,000+ TEU shipped.

Can you ship DG cargo door-to-door including destination customs clearance?

Yes. We provide door-to-door service with dual customs clearance (China export + destination import). We work with specialist DG customs brokers at destination ports in Europe, South America, the Middle East, and Africa — brokers who understand DG-specific import permit requirements, tariff classifications, and inspection procedures. The client receives their DG cargo at their warehouse, not at the port.

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