A Certificate of Origin certifies the country in which the goods were produced or substantially transformed. Destination customs use it to determine the tariff rate. Without a valid CO, the cargo enters at the standard most-favoured-nation rate. With a valid CO under a free trade agreement, the cargo can enter at a preferential rate, which for many chemicals into ChAFTA-eligible Australia is zero.
The two main types of CO
| Type | Purpose | Tariff effect |
|---|---|---|
| Non-preferential CO | Certifies the country of origin for general purposes (anti-dumping, safeguard, statistics) | No tariff reduction |
| Preferential CO | Certifies origin under a specific free trade agreement | Triggers preferential tariff under that FTA |
A non-preferential CO is the basic document. It identifies the goods as originating from China for purposes other than tariff reduction, for example, to allow destination customs to apply or exempt an anti-dumping duty, or to satisfy buyers who need country-of-origin proof for their own contractual reasons.
A preferential CO is FTA-specific. The most common ones in chemical sourcing from China are:
- Form E (China-ASEAN Free Trade Area) for cargo into ASEAN countries
- ChAFTA CO for cargo into Australia under the China-Australia Free Trade Agreement
- RCEP CO for cargo into the broader Regional Comprehensive Economic Partnership signatories
- China-Korea FTA CO for cargo into South Korea
For cargo into the US, no FTA exists with China, so preferential COs do not apply. The only relevant document is a non-preferential CO, used primarily to defend against anti-dumping duty or Section 301 tariff exemption claims.
Who issues a CO in China
Three categories of issuer:
- CCPIT (China Council for the Promotion of International Trade). The standard issuer for non-preferential COs. Most factories arrange CCPIT issuance through their freight forwarder.
- GACC (China Customs). The issuer for preferential COs under FTAs. The factory submits the application via the China International Trade Single Window. Issuance takes 2 to 5 business days for routine applications.
- Chambers of Commerce in specific provinces. Some provincial chambers also issue non-preferential COs.
Issuance fees are typically RMB 100 to RMB 300 per certificate. Most factories absorb the cost; some pre-bill as a separate line on the invoice.
The substantial-transformation rule that catches re-exporters
The CO certifies origin where the goods were produced or substantially transformed. “Substantial transformation” is the technical test: the operation in the country of origin must change the tariff classification or add at least a defined percentage of value (typically 35 to 45 percent depending on the FTA).
This catches re-exporters trying to avoid Section 301 tariffs by routing Chinese-made chemicals through a third country. If the third-country operation is mere repackaging or relabelling, the cargo does not qualify as originating from that third country. The destination customs authority can challenge the CO and reclassify the cargo as Chinese origin, applying the full Section 301 rate plus a back-duty assessment for prior shipments. CBP and the EU customs authorities have ramped up substantial-transformation audits since 2023.
If you are sourcing through a Vietnamese, Malaysian, or Thai trader on a Chinese-made product, ask for documentation of the substantial-transformation operation in that country before accepting the third-country CO. If the trader cannot show genuine processing, not just repackaging, the CO is high risk.
What a CO does not do
A CO does not:
- Certify product quality or specification (that is the COA’s job)
- Certify regulatory compliance (REACH, TSCA, AICIS are separate filings)
- Override an active anti-dumping order against a specific factory
- Replace any other origin documentation customs may request
Practical sourcing notes
For shipments into Australia under ChAFTA, the ChAFTA CO is the difference between zero tariff and 5 percent MFN on most chemicals. Always request it on the purchase order. For shipments into the US, a non-preferential CO is rarely strictly required but is standard practice and helps if customs query the entry. Build it into the document checklist on every purchase order.
Related terms
ChAFTA is the China-Australia FTA that drives preferential CO use into Australia. Rules of origin define the substantial-transformation tests. MFN tariff is the rate that applies without a preferential CO.