What a manufacturing contract with a Chinese supplier does
A manufacturing contract with a Chinese supplier is the written agreement that fixes what the factory will make, to what standard, at what price, by when, and what happens when any of those fails. Legally it is usually a contract for the international sale of goods, which means a body of treaty law applies to it before either party writes a word.
Many importers buy on a purchase order and a pro forma invoice alone. Those documents state price, quantity and delivery, and are typically silent on defects, tooling, intellectual property and disputes. That silence is not neutral. It hands the answer to the default rules of whichever law applies, and to the practical fact that the factory holds the goods, the molds and often the deposit. A short sample purchase agreement for a first sample order follows the same logic on a smaller scale: it should identify the parties correctly and state that the approved sample becomes the reference for production.
This guide describes contract structure. It is not legal advice; clause wording, governing law and the choice of dispute forum are decisions for a trade attorney.
The CISG applies by default between the US and China
The United Nations Convention on Contracts for the International Sale of Goods (CISG) is a treaty that supplies uniform rules for cross-border sales: formation of the contract, the seller's obligations, conformity of goods, remedies and damages. According to the UNCITRAL status table (accessed 30 October 2026), China signed on 30 September 1981 and approved on 11 December 1986; the United States signed on 31 August 1981 and ratified on 11 December 1986. The convention entered into force for both on 1 January 1988. The table lists 97 parties.
The practical effect for a US-based buyer and a mainland-China-based seller:
- The CISG applies automatically under Article 1(1)(a), because both parties have their places of business in contracting states.
- It can be excluded under Article 6, but only by doing so in the contract.
- Both countries declared they are not bound by Article 1(1)(b), so the CISG does not reach a contract merely because conflict-of-law rules point to US or Chinese law where the other party is in a non-contracting state.
One common assumption deserves attention. A clause stating that the contract is "governed by the laws of" a US state does not, by itself, exclude the CISG under the prevailing reading, because the convention is part of that state's law. That reading was not re-verified for this guide and should be confirmed by counsel. The UNCITRAL table also lists no Article 96 written-form declaration for China as of 30 October 2026; reports that China withdrew such a declaration in 2013 were not confirmed. Whether the CISG extends to Hong Kong was likewise not confirmed, which matters when the seller is a Hong Kong entity.
Clauses a China supply contract should carry
The following list describes what a supply contract typically addresses. It is a drafting checklist, not model language:
- Parties — the supplier's full registered Chinese legal name and its Unified Social Credit Code, matching the business license.
- Product definition — the written specification and the approved golden sample (the signed and sealed reference sample both parties keep).
- Commercial terms — quantity, unit price, currency, and the Incoterm under Incoterms 2020.
- Delivery — dates, and liquidated damages for late delivery.
- Quality — the quality standard, the buyer's inspection rights and the AQL sampling plan.
- Defects — remedies, replacement or credit, and any warranty period.
- Packaging and labeling — including country-of-origin marking.
- Compliance — for example UFLPA supply-chain obligations and restricted-substance requirements.
- IP and confidentiality — ownership of designs and a non-use, non-disclosure and non-circumvention commitment.
- Tooling ownership — covered in its own section below.
- Payment — terms, and the single named beneficiary bank account.
- Termination, governing law, dispute resolution and language.
Two of these are where English-language contracts most often fail in practice. The party name must be the registered Chinese entity, not a trade name or an English translation of uncertain origin. And the beneficiary account named in the payment clause becomes the reference against which any later "new bank details" message can be rejected.
Governing law and contract language
Choosing PRC law often helps enforceability in China, because a Chinese court or tribunal applies its own law directly. A foreign governing law can be chosen for a foreign-related contract, but it must then be proved as a matter of fact in a Chinese forum, which adds time and cost. Whatever national law is chosen, the CISG governs the sale-of-goods aspects unless it is excluded.
On language, bilingual Chinese–English contracts with a clause stating which version controls are common practice. Whether a Chinese-language version is legally required for validity has not been confirmed as a general rule for this guide. The practical case for a Chinese text is simpler: it is the version the factory's managers read and the version a Chinese court or arbitrator will work from.
Arbitration or courts
A foreign court judgment is generally harder to enforce in mainland China than an arbitral award, because China is a party to the 1958 New York Convention on the recognition and enforcement of foreign arbitral awards. (China's accession in 1987, with reciprocity and commercial reservations, is background that was not re-verified for this guide.) For a buyer whose supplier has no assets outside China, a judgment from a US court may be close to unenforceable in practice.
The China International Economic and Trade Arbitration Commission (CIETAC), based in Beijing, is the most-used mainland institution for foreign-related commercial disputes. Contracts also specify institutions outside the mainland, such as the arbitration institutions known as HKIAC in Hong Kong and SIAC in Singapore. The current edition of the CIETAC rules — commonly reported as the 2024 Rules, effective 1 January 2024 — and a reported revision of the PRC Arbitration Law could not be confirmed for this guide. Institution, seat and rules are legal choices for counsel.
Chinese courts remain relevant either way. USTR's 2026 Special 301 Report notes that amendments to the Civil Procedure Law in force in January 2024 "expanded the jurisdiction of Chinese courts in cases involving foreign parties," and that the Apostille Convention entered into force for China in November 2023 with "inconsistent implementation" in 2025 (p. 57). On the trade-policy side, law-firm commentary reports that a revised PRC Foreign Trade Law, adopted 27 December 2025, took effect on 1 March 2026; it bears on the policy environment rather than on the clauses of an individual supply contract.
Tooling and mold ownership
Custom tooling — injection molds, die-casting dies, stamping dies, fixtures — is usually paid for by the buyer, either as a separate charge or amortized into the unit price. Paying for a mold does not by itself establish who owns it, and the mold sits in the factory. Without a contract clause, physical possession by the factory is the practical reality.
A tooling clause typically states that:
- the buyer owns the tooling once it is paid for;
- the tooling is marked as the buyer's property;
- it is used only for the buyer's orders;
- it is maintained by the factory and its condition recorded; and
- it is released to the buyer, or to a party the buyer names, on demand.
The clause matters most at the moment the relationship ends, when the buyer wants to move production and the factory has the least reason to cooperate. Amortized tooling is the hardest case, because the buyer may not have finished paying for it when that moment arrives.
Common mistakes
- Signing an English-only contract with a name that does not match the registered Chinese entity. Enforcement starts with proving who the counterparty is.
- Choosing US courts against a supplier with no US assets. The judgment may be impossible to collect.
- Relying on purchase-order boilerplate. It is usually silent on tooling, defects and IP.
- Assuming the CISG does not apply because the contract names a US state's law.
- Leaving tooling ownership unwritten, especially where the mold cost is amortized into the unit price.
- Naming no beneficiary account, which leaves no contractual reference point against a fraudulent change of bank details.
Frequently asked questions
Is China a party to the CISG?
Yes. According to UNCITRAL's status table, China approved the United Nations Convention on Contracts for the International Sale of Goods on 11 December 1986, and it entered into force for China on 1 January 1988, the same date as for the United States. Both countries declared they are not bound by Article 1(1)(b).
Does the CISG apply to my contract with a Chinese supplier?
Generally yes, if you are based in the United States and the supplier is in mainland China, because both are contracting states under Article 1(1)(a). It applies unless the contract expressly excludes it under Article 6. Naming a US state's law does not by itself exclude it under the prevailing reading, which counsel should confirm.
Should a China supply contract use arbitration?
Arbitration is often preferred because arbitral awards are generally easier to enforce in mainland China than foreign court judgments, China being a party to the 1958 New York Convention. CIETAC is the most-used mainland institution for foreign-related disputes; HKIAC and SIAC are also used. Choosing the institution and seat is a decision for counsel.
Who owns the molds a Chinese factory makes for me?
Whoever the contract says owns them. Without a clear clause, the factory physically holds the molds, and that possession decides matters in practice. A tooling clause should state that the buyer owns paid-for tooling, that it is marked, used only for the buyer's orders, and released on demand.
Does a contract with a Chinese supplier need to be in Chinese?
A Chinese-language version has not been confirmed as a general legal requirement for validity, but bilingual contracts with a clause naming the controlling language are common practice. A Chinese text is the version the factory's managers read and the one a Chinese court or arbitrator will work from, which is a practical reason to include it.
Which law should govern a China manufacturing contract?
PRC law often helps enforceability in China because a Chinese forum applies it directly; a foreign law can be chosen for a foreign-related contract but must then be proved in a Chinese forum. In either case the CISG governs the sale-of-goods aspects unless excluded. The choice is a legal decision for a trade attorney.