Practical Answer — Supplier Control
How Do I Stop a Chinese Supplier From Contacting or Selling to My Customers?
Last updated: June 2026
A Chinese factory that knows your customers can attempt to sell directly to them — cutting you out of the relationship. Addressing this requires a combination of contractual non-circumvention terms and limiting what customer information the factory has access to in the first place.
In short
Two things work together here: a non-circumvention clause in your manufacturing agreement, and limiting what customer information you share with the factory in the first place. The contractual term creates a legal obligation; limiting disclosure reduces the information the factory has to act on. Both are needed — a non-circumvention clause over customer information the factory was never given is meaningful protection; one over information the factory already has is weaker.
The Direct Answer
Include a non-circumvention clause in your manufacturing agreement expressly prohibiting the factory from approaching or selling to your customers or distributors. Treat your customer list as confidential information subject to the agreement's non-disclosure obligations. And share only the customer information that is strictly necessary for production and logistics — not your full customer database.
How Customer Circumvention Happens
Customer circumvention by a Chinese factory typically occurs in one of several ways:
- The factory identifies your customers from shipping labels, export documents, or correspondence and contacts them directly with lower prices
- A factory sales representative who knows your business develops a direct relationship with your customer and starts taking orders without your involvement
- The factory sets up a competing distribution channel — selling the same product directly to buyers in your market under its own brand or the same product specification
- A terminated or former factory relationship uses retained customer contact information to approach your accounts after you have switched suppliers
Contract Terms That Address Customer Protection
Non-circumvention clause
An express prohibition on the factory approaching, soliciting, or entering into a direct business relationship with your customers, distributors, agents, or end buyers — bypassing you as the brand owner or intermediary. This should be in the manufacturing agreement, not only the NNN (which typically covers pre-production disclosures).
Customer list as confidential information
Define customer information (names, contact details, purchase history, pricing) as confidential information subject to the agreement's non-disclosure obligations. This creates a contractual basis for a trade secret-type claim if the information is misused — supplementing any standalone trade secret argument.
Non-competition clause
A prohibition on the factory selling the same or substantially similar products directly to buyers in your market, or through any channel that competes with your distribution. This is distinct from non-circumvention (which covers using your specific customer information) — non-competition covers parallel channel selling even to customers who are not on your list.
Liquidated damages
A pre-specified damages amount per breach of the non-circumvention obligation. This addresses the practical difficulty of proving the actual damage caused by circumvention — which can be hard to quantify. Courts in China have enforced liquidated damages clauses in commercial agreements.
Limiting What Customer Information the Factory Has
Contractual terms address what the factory is permitted to do with customer information it has. Limiting what information the factory has in the first place reduces what the contractual terms need to cover.
- Use a logistics intermediary or freight forwarder as the shipping recipient — the factory sees the freight company's address, not your customer's
- Use blind shipping or triangulation arrangements where the factory ships to a consolidation point rather than directly to the end customer
- Avoid providing customer contact lists, order history, or pricing information to the factory — share only what is necessary for each production and shipping instruction
- Use your own labels and documentation on exports — limit the information visible on shipping documents to what is necessary
Get Help
Add Non-Circumvention Protection to Your Manufacturing Agreement
If your current manufacturing agreement or NNN does not include customer non-circumvention, non-competition, and customer list confidentiality terms, that can be addressed before your next production engagement.
Frequently Asked Questions
What is a non-circumvention clause in a China manufacturing agreement?
A non-circumvention clause prohibits the factory from directly approaching, selling to, or entering into a business relationship with your customers — bypassing you as the intermediary or brand owner. It is typically combined with a non-disclosure clause (covering the customer list as confidential information) and a non-competition clause (covering the products themselves). Together, they form the NNN structure: non-disclosure, non-use, non-circumvention.
Is my customer list protected as a trade secret in China?
A customer list may qualify for trade secret protection under Chinese law if it meets the requirements: it is not generally known to the public, it has commercial value because it is not known, and you have taken reasonable steps to keep it confidential. Reasonable steps typically include treating it as confidential in your agreements, limiting who has access, and not disclosing it beyond what is necessary. Whether a specific customer list qualifies depends on the facts and the nature of the list.
Should I share my full customer list with my Chinese factory?
Generally, no — share only what is necessary for production and shipping purposes. A factory needs to know the shipping destination, not your full customer list with contact information, pricing, and order history. If the factory needs customer details for delivery, consider whether a logistics intermediary or blind shipping arrangement reduces exposure. The less customer information the factory has, the less there is to misuse.
What contract terms address the risk of a supplier contacting my customers?
Key terms include: a non-circumvention clause (express prohibition on the factory approaching or selling to your customers directly); a customer list confidentiality clause (treating customer information as confidential information subject to the agreement's non-disclosure obligations); a non-competition clause (prohibiting the factory from selling the same or similar products directly to your market); and a liquidated damages provision (specifying a damages figure per breach, which avoids the difficulty of proving actual damages from circumvention). These terms are most effective when they are in a written manufacturing or OEM agreement — not just an NNN.
What can I do if a Chinese factory has already contacted my customers?
The available steps depend on what agreement is in place and what evidence exists. If the factory has breached a non-circumvention clause, this is a contractual breach — the dispute resolution and remedies in the agreement are the relevant starting point. If you have evidence of contact, document it carefully. If no agreement covers this scenario, the options are more limited — trade secret law may apply if the customer list was disclosed in confidence, but the analysis is fact-specific. Taking action is significantly easier when the terms were set in advance.
On this page
Related Resources
Further reading on non-circumvention, supplier control, and protecting your business relationships in China manufacturing.
How Do I Stop a Sourcing Agent From Bypassing Me to Deal With My Factory?
Non-circumvention and supplier control measures for sourcing agent relationships.
Read Answer InsightWhy an NNN Is Not Enough Without Supplier Control
Why the NNN agreement is only one layer — and what supplier control terms complete the picture.
Read Insight ServiceChina Supplier Control Review
Review of your NNN, manufacturing agreement, and supplier control terms — including non-circumvention and customer protection provisions.
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