GB / 国标

GB Classification refers to the Chinese national standards system. GB (国标, guobiao) standards are mandatory and have the force of law for products and processes within their scope. GB/T (推荐, tuijian, “recommended”) standards are voluntary technical specifications. The Standardisation Administration of China (SAC) manages the GB system. For chemical products, the most-encountered GB families are the GB 30000 series (the Chinese implementation of UN GHS hazard classification) and the GB 12268 / GB 21175 series (Chinese dangerous goods transport classification). GB classification is the Chinese-domestic counterpart of UN GHS, IMDG, and the various international standards regimes; for chemicals shipped within China, the GB classification, not the IMDG class, is what governs.

GB vs GB/T

For chemical exporters, the practical operational standards are the mandatory GB 30000 series (hazard classification) and the GB 12268 series (transport). Voluntary GB/T standards (SDS format, packaging specifications, test methods) are often complied with even though they are technically optional, because Chinese customers and regulators expect them.

GB 30000 series. GHS implementation in China

China implements UN GHS through GB 30000-2013, a multi-part standard:

Each GB 30000 part defines the hazard category cut-offs, the hazard statements, the precautionary statements, the pictograms, and the signal word, all aligned with UN GHS Rev. 4 with some Chinese-specific clarifications.

GB 12268 series, dangerous goods transport classification

GB 12268-2012 (also referenced as GB 12268-2012) provides the Chinese national list of dangerous substances with their UN numbers, proper shipping names, and Chinese transport classifications. The list aligns broadly with the UN Recommendations on the Transport of Dangerous Goods (the “Orange Book”) and with IMDG, with some specific Chinese inclusions and divergences.

The companion standards include:

• GB 21175 (national list of substances and articles forbidden for road transport)
• GB 19457 (signs and signals for dangerous goods transport)
• JT/T 617 (procedural standards for road transport of dangerous goods)
• JT/T 808 (vehicle telematics for hazardous-cargo trucks, mandatory GPS tracking)

For sea export from China, the IMDG classification governs internationally but the cargo’s Chinese-domestic transport leg (factory to port) is governed by GB 12268 and JT/T 808. A cargo that is IMDG-classified for sea may need separate Chinese road-transport classification documentation.

Where GB diverges from international standards

GB classification is mostly aligned with international standards but diverges in specific places:

For a Chinese factory shipping to international markets, the GB-to-international cross-reference is typically managed by the factory’s regulatory team. For a buyer auditing the factory’s regulatory file, asking for the GB-to-IMDG cross-reference for the specific cargo is a useful diligence step.

When GB classification catches exporters off guard

Three failure patterns recur:

1. Domestic-versus-export classification mismatch. The factory’s domestic SDS uses GB 30000 classification, but the export English SDS uses GHS Rev. 7. A category change between Rev. 4 and Rev. 7 can produce different hazard statements on the two documents. The customer’s regulatory team flags the inconsistency.
2. GB transport list update. GB 12268 is revised periodically. A substance previously not on the Chinese transport-restricted list may be added; the factory’s existing logistics arrangements stop working until the substance is reclassified.
3. Industry-specific GB. Many industries have additional GB or HG/T standards that apply on top of the general GB system. Pharmaceutical-grade chemicals have GB pharmaceutical-grade requirements; food-grade chemicals have GB 4806 food-contact requirements. Mismatching grades produces both regulatory and customer-side rejection.

Practical sourcing notes

For an international buyer:

• Request the factory’s GB classification documentation for the specific cargo. The factory should produce an internal classification record showing the GB 30000 hazard category and the GB 12268 transport class.
• For specialty grade products (pharmaceutical, food-contact, electronic-grade), confirm the relevant industry-specific GB standard the factory complies with.
• Cross-reference the GB classification against the destination-market classification (REACH, TSCA, AICIS) before booking.

Related terms

GHS is the UN-level hazard classification scheme that GB 30000 implements. IMDG is the international maritime DG code that GB 12268 mostly aligns with. GB/T 17519 is the Chinese SDS format standard. Dangerous Chemicals License references GB classifications for licence scope. MEE China and MSA China are the regulators that enforce GB-classified chemicals. Hazard Statement and Precautionary Statement are the H-codes and P-codes used in GB 30000 and GHS labels.