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Are the costs for the prototype of a custom-designed assembly line refundable?

非标流水线样机费用退不退:看两点——有没有下大货单、当初怎么约定费用性质;约定大货抵扣而下单后供应商拒单,打样费全额退;定金不退、订金可退,定金不超合同额20%。

Are prototype costs for custom assembly lines refundable?

1. Check the Agreement

First, look at the terms agreed upon. Based on how industry disputes are typically resolved, the refundability of prototyping fees hinges on a few key factors: whether a bulk order was placed (if the agreement stipulated that the prototyping fee would be offset against the bulk order, but the supplier subsequently rejected the order due to insufficient capacity, the fee must be refunded in full);
the nature of the fee as originally agreed (whether chats or contracts specified the amount, offset terms, and conditions for a refund); sample quality (if severe color deviations or functional failures prevent approval, the fee arrangement may need to be renegotiated); verbal agreements (verbal promises to offset costs later are easily invalidated by personnel changes; offset conditions must be written into the contract); and 1688 sample rules (for orders meeting the seller’s refund criteria, the sample fee—excluding shipping—can be refunded, usually limited to one refund per transaction). Ultimately, whether the prototype fee is refundable is determined the moment the contract is signed.

2.
Deposit vs. Down Payment

The difference between a binding deposit (*dingjin*) and a non-binding down payment (*dingjin*).

According to Articles 586 and 587 of the Civil Code, the nature of the fee determines whether it is refundable: *Dingjin* (earnest money/deposit with guarantee function)—serves as a guarantee; the party paying it has no right to a refund if they breach the contract, while the party receiving it must refund double the amount if they breach (the “earnest money penalty” rule); the amount cannot exceed 20% of the principal contract value, and any excess portion does not carry the legal effect of earnest money. *Dingjin* (prepayment/down payment)—generally viewed as a prepayment without guarantee characteristics; regardless of which party breaches, the recipient may be required to refund it (subject to deductions for actual losses). Example: Total price 4,300 yuan; earnest money cap 860 yuan; the remaining 1,290 yuan is classified as prepayment. If a contract for work (custom manufacturing) is terminated at will, the prepayment must be refunded, though compensation must be paid for any actual losses incurred by the contractor.
Court ruling: Where both the contract terms and transfer records labeled the payment as *dingjin* (prepayment type) without explicitly stating a guarantee function, the court deemed it a prepayment;
since the project never commenced, a refund was ordered—a single character’s difference leads to vastly different legal outcomes.

III. How much to charge

What is the standard charge for prototype fees? Industry practice categorizes fees as follows: Stock samples—$10 to $30; Customized samples (color/label changes, minor modifications without new molds)—$30 to $150; Pre-production prototypes (requiring new molds or complex tooling)—$150 to $800 (with molds quoted separately at $2,000 to over $50,000); Simple product prototypes—$20 to $50; Prototypes requiring custom tooling—$500 to over $5,000. Cost components include: material costs (based on retail price, not production cost), labor for small-batch production, tooling or mold costs, and testing costs. For customized prototypes, the technical team first assesses feasibility and issues a cost breakdown (R&D parameter adjustments, mold making, small-batch trial production, testing); work begins only after client confirmation. The fee depends on complexity and cost, not arbitrary pricing.

IV. Negotiating Offsets

How to negotiate offsets and refunds.
Based on industry practice, here is how to negotiate prototype fee offsets: Refundable deposit model—pay a $500 prototype fee upfront, with the condition that it is offset against the first bulk order exceeding $5,000; reputable suppliers usually agree to this. Mold/prototyping offsets—the client pays a soft-tooling fee upfront, and if the formal mold order is placed with the same supplier, the fee is credited against the mold cost at an agreed ratio (commonly 30% to 100%). Refund methods—deduction directly from the payment for goods or via cash transfer. Prerequisites—the offset is contingent upon the placement of a subsequent order and must be stipulated in the contract. Bulk order deductions—the sample fee is refunded or offset against bulk orders (usually over 500 units). Shipping costs—usually borne by the buyer but refundable under certain conditions; by writing the offset terms into the contract, the prototype fee ceases to be a “sunk cost.”

V. To Refund or Not to Refund

When to refund and when not to.
According to industry norms, the decision to refund prototype fees is determined as follows: Refundable—agreed offset against bulk orders but the supplier rejects the order (due to insufficient capacity or rising material costs);
sample quality fails significantly to meet standards, preventing approval; work has not yet commenced on items classified as deposits; or the return of a prepayment following contract termination. Non-refundable—fees classified as earnest money/deposits where the buyer unilaterally cancels the order (subject to forfeiture rules); fees agreed upon as non-offsettable sample costs (e.g., purchasing a sample for confirmation); or standard off-the-shelf samples (which are essentially finished goods). Partial refund—returning the balance after deducting actual losses (deducting losses from the deposit). Alternatives—instead of a cash refund, the amount can be credited toward a future order or offset against service fees. Whether a prototype fee is refunded depends on the agreement; in the absence of an agreement, the classification (e.g., earnest money vs. deposit) governs the outcome. Clearly defining refund rules before signing the contract saves ten thousand times the trouble of arguing about it later.

Conclusion

Whether the cost of a prototype for a non-standard assembly line is refundable depends on the agreement, the nature of the payment, and the specific order: Check the agreement—ensure terms for offsetting the cost against bulk orders are written into the contract (offsetting is contingent upon the subsequent order proceeding); verbal promises to offset costs later are often unenforceable, whereas if a supplier refuses the order, the prototyping fee must be refunded in full. Check the nature of the payment—a “dingjin” (fixed deposit/earnest money) is non-refundable if the payer defaults but must be returned at double the amount if the recipient defaults; a “dingjin” (advance payment/down payment) is refundable (minus actual losses); the deposit amount should not exceed 20% of the contract value. Check the cost—stock samples: $10–$30; custom items without new molds: $30–$150; pre-production prototypes: $150–$800 plus mold costs; simple parts: $20–$50; complex parts: $500–$5,000. Negotiate offsets—consider a refundable deposit model (e.g., a $500 sample fee offset against a first order exceeding $5,000), offsetting 30%–100% of mold and prototyping fees, and determining the refund method (deduction from the bulk order balance or cash transfer). Consider the scenario—refunds apply if the supplier refuses the order or the sample fails to meet standards; “advance payments” are refundable, while “fixed deposits/earnest money” are not.
According to industry practice, the key to refundability lies in how the fee is classified: labeling it as a “fixed deposit” (earnest money) implies a guarantee; labeling it as an “advance payment” implies a prepayment; and explicitly stating it can be offset against bulk orders makes it a refundable deposit.
The choice of these terms determines the fate of thousands of dollars.

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