China OEM/ODM Contract Guide
10 Essential Clauses — One Contract Can Save You Millions
Hello, this is GreenFrog Seoul.
When doing OEM/ODM with Chinese factories, having a solid contract is just as important as finding a good factory. We've seen countless cases where people lost tens of thousands of dollars after proceeding without a contract based on mutual trust.
"I paid $25,000 for the mold, but the factory was using it to produce for other buyers too."
"We didn't specify quality standards in the contract, so they shipped products with a 30% defect rate and said 'that's normal.'"
"I sent my design and six months later found the exact same product selling on Taobao."
Today, we'll cover the 10 essential clauses you must include in your China OEM/ODM contract, based on real-world experience. This single guide will ensure you never miss a critical item during contract review.
OEM vs ODM: Different Contract Structures
Before drafting your contract, you need to clearly understand the difference between OEM and ODM — because the key contract points differ significantly.
| Category | OEM | ODM |
|---|---|---|
| Design | Provided by buyer | Owned/developed by factory |
| Molds | Made at buyer's expense | Factory's existing molds |
| IP Rights | Buyer owns | Factory owns (licensing possible) |
| Key Contract Focus | Mold ownership, design protection | Exclusivity, modification limits |
| Risks | Design leaks, mold misuse | Same product supplied to competitors |
For OEM, focus on "protecting what's yours." For ODM, focus on "exclusivity and modification restrictions."
With OEM, your top priority is preventing your designs and molds from being leaked. With ODM, the key is stopping the factory from selling the same product to other buyers and securing exclusivity in your market.
Clause 1: Product Specification
This is the starting point of your contract and prevents 90% of disputes.
Must-Include Items
- Materials: Don't just write "ABS plastic" — specify the grade. Example: "LG Chem ABS HI-121H" or equivalent
- Dimensions & Tolerances: Include drawing numbers with tolerance specs. Example: ±0.5mm
- Color: Use Pantone numbers. Not "white" but "Pantone 11-0601 TCX"
- Packaging Specs: Inner packaging, outer packaging, units per carton, label placement — all specified
- Performance Standards: Waterproof rating (IP67), durability (1.5m drop test), battery capacity, etc.
Never write "same as sample"
Writing "produce identical to sample" is legally meaningless. Samples are small-batch production with inevitable quality differences from mass production, and factories will argue "mass production is always slightly different." Always attach a separate specification annex with quantified standards.
Clause 2: Mold Ownership
This is the most frequently disputed clause in China OEM contracts. Cases where the buyer paid for the mold but the factory refuses to return it or uses it for other buyers are extremely common.
What to Specify
- Mold Ownership: "All molds/tooling are owned by the buyer and shall not be used for third-party production without the buyer's written consent"
- Mold Maintenance: Factory's obligation to properly store and maintain the molds
- Mold Return: Buyer's right to request mold return upon contract termination
- Mold Lifespan: Guaranteed shot count (e.g., 100,000 shots). Cost-sharing for replacement beyond lifespan
Practical Tip: Document mold photos and serial numbers
After paying for molds, always obtain photos, serial numbers, and storage location in writing. This serves as evidence that "this mold is mine" in disputes. Periodically requesting mold condition photos is also good practice.
Clause 3: Intellectual Property Protection
The moment you hand over designs, technology, and brand assets to a Chinese factory, leakage risk begins. Without clear IP protection clauses in the contract, legal recourse is virtually impossible.
Essential Clauses
- Design Ownership: All designs, drawings, and technical documents provided by the buyer remain buyer's property
- No Copying/Imitation: Factory cannot independently produce or sell products similar to the buyer's product
- Document Return/Destruction: Obligation to return or destroy all technical materials upon contract termination
- Breach Compensation: Specific compensation amounts or calculation methods for IP infringement
Register your trademarks and design patents in China first
China follows a "first-to-file" system — whoever registers first owns the rights. No matter what your contract says about IP protection, if the factory registers your trademark or design patent in China first, you're at a legal disadvantage. Register your trademark and design patent in China before signing the contract.
Clause 4: Quality Standards & Inspection
Quality disputes arise because "there were no standards." Your contract must specify objective quality criteria and inspection processes.
Key Items
- AQL (Acceptable Quality Level): Specify defect rate thresholds. Example: "AQL 2.5 basis — Critical defects 0%, Major 2.5%, Minor 4.0%"
- Inspection Timing: Right to inspect at 3 stages — pre-production (raw materials), during production (inline), post-production (pre-shipment)
- Inspector: Right to deploy buyer's own team or third-party inspection agencies (SGS, Bureau Veritas, etc.)
- Rejection Handling: Specify whether rework, replacement, or refund applies upon rejection
- Inspection Costs: Cost allocation — buyer pays if passed, factory pays if failed, etc.
"No shipment without pre-shipment inspection approval" is mandatory
Without this clause, factories will ship regardless of inspection results. Rejecting defective goods already loaded in a container is practically impossible. Specify that shipment only proceeds after an Inspection Release is issued.
Clause 5: Delivery & Penalty
Delivery delays from Chinese factories are common. Without specific penalties in the contract, factories have no incentive to meet deadlines.
What to Specify
- Delivery Date: Clear terms like "within XX days after deposit payment" or "by [specific date]"
- Delay Penalty: Daily or weekly penalty rate. Example: "0.5% of total order value per day of delay, maximum 10%"
- Maximum Delay Period: Beyond this period, buyer has the right to cancel the order and request a full refund
- Force Majeure: Define force majeure events (natural disasters, government regulations) and handling procedures
Separate "production completion date" from "shipment date"
Factories often claim "production is finished" while actual shipment doesn't happen for another 2 weeks. Specifying "delivery deadline based on FOB shipment date" prevents this maneuver.
Clause 6: Pricing & Payment Terms
What to Specify
- Unit Price: Specify Incoterms (FOB/CIF/EXW). Clarify what's included (packaging, labeling, etc.)
- Payment Split: Deposit/balance ratio. Standard: 30% deposit (T/T) + 70% before shipment (after B/L copy verification)
- Exchange Rate: Whether to lock the rate at contract signing or apply the rate on payment date
- Price Validity: Conditions for price renegotiation when raw material prices fluctuate (e.g., ±10% change)
Never pay 100% upfront
Avoid factories that demand 100% advance payment on the first order. The 30/70 structure is industry standard. Using Trade Assurance or escrow adds further protection. Always pay the balance after inspection approval.
Clause 7: Exclusivity
Particularly important for ODM contracts. If the factory supplies the same product to your competitors, your market differentiation disappears.
Define the Scope Clearly
- Regional Exclusivity: Specify the territory, e.g., "exclusive supply rights for the Korean market"
- Duration: Set the exclusivity period (e.g., 2 years from contract date)
- Minimum Order Commitment: Annual minimum order quantity as a condition for maintaining exclusivity
- Breach Penalty: Specific compensation for exclusivity violations
Exclusivity is a "give and take" arrangement
For a factory to grant exclusivity, they need guaranteed volume. Presenting a realistic Minimum Annual Quantity commitment makes it easier for the factory to accept exclusivity terms. Keep the numbers realistic.
Clause 8: Confidentiality (NDA)
Either sign a separate NDA or include a confidentiality clause within the OEM/ODM contract.
Include These
- Scope of Confidential Information: Designs, technical data, pricing, trade terms, customer information, etc.
- Obligation Period: Confidentiality continues for X years after contract termination (typically 3–5 years)
- No Third-Party Disclosure: Prohibition on sharing information with third parties including factory employees and subcontractors
- Breach Compensation: Liability for damages from confidentiality breaches
Sign the NDA BEFORE the main contract
You'll already be sharing designs and technical data during the quotation and sample development stage. Sign the NDA before main contract negotiations begin to protect information from the earliest stage.
Clause 9: Warranty & Claims
What to Specify
- Warranty Period: Warranty period after product delivery (e.g., 12 months)
- Warranty Coverage: Free replacement, repair, or refund for material and manufacturing defects
- Claims Procedure: Notification deadline upon defect discovery (e.g., within 30 days), evidence requirements (photos, inspection reports)
- Resolution Method: Deduction from next order, free replacement shipment, or refund
- Claims Costs: Who bears inspection costs, return shipping costs, etc.
Clause 10: Dispute Resolution & Governing Law
You need to predetermine where, under which law, and by what method disputes will be resolved.
Options
| Method | Pros | Cons |
|---|---|---|
| Chinese Court | Easy enforcement at factory location | Tends to favor local parties |
| Buyer's Country Court | Favorable to buyer | Difficult to enforce judgment in China |
| International Arbitration (CIETAC/HKIAC) | Neutral, enforceable in China | Higher costs |
We recommend CIETAC (China International Economic and Trade Arbitration Commission)
CIETAC arbitration awards are legally enforceable within China. While foreign court judgments are virtually unenforceable in China, CIETAC awards are supported by Chinese courts for enforcement. Costs are typically 1–3% of the disputed amount.
- Governing Law: Choose between Chinese law or the UN Convention on Contracts for the International Sale of Goods (CISG)
- Arbitration Language: English or Chinese (consider translation costs)
- Arbitration Venue: Beijing (CIETAC), Hong Kong (HKIAC), Singapore (SIAC), etc.
Contract Drafting Checklist
- Product specification attached as a separate Annex with quantified standards
- Mold ownership, return rights, and third-party use prohibition specified
- IP ownership of designs and technical documents specified
- AQL standards and inspection procedures included
- "Shipment only after inspection approval" clause included
- Delivery date and delay penalties (daily %) specified
- Payment terms set at 30/70 or lower
- Exclusivity scope (region, duration, minimum order) defined
- NDA signed before main contract (or confidentiality clause included)
- Dispute resolution method (arbitration/court) and governing law specified
- Trademarks/design patents registered in China in advance (or in progress)
- Contract drafted in bilingual format (Chinese + English)
Always draft contracts in bilingual format (Chinese + English)
Contracts written only in English have weaker standing in Chinese courts and arbitration bodies. Draft a Chinese version alongside, and specify which language prevails when the Chinese and English versions conflict. Not defining language priority creates confusion during disputes.
Conclusion
A contract is not just "a document you'll never look at unless something goes wrong." A good contract prevents problems before they happen and resolves them after they occur.
In summary:
- Specifications: Clear with numbers and grades. No "same as sample"
- Molds & IP: Ownership, return rights, and leakage prevention — be thorough
- Quality: AQL standards + "shipment after inspection approval" mandatory
- Delivery: Specific dates + delay penalties. FOB shipment date basis
- Payment: 30/70 structure. No 100% advance
- Exclusivity & NDA: Clear scope and duration
- Disputes: CIETAC arbitration recommended. Bilingual drafting essential
GreenFrog Seoul provides end-to-end support — from contract review to factory selection, quality management, and international logistics — backed by over 10 years of China OEM/ODM expertise.
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