China Aluminum Window Payment Terms: T/T vs L/C

What Payment Terms Should a First-Time Buyer Accept From a Chinese Aluminum Window Factory?

Aluminum window payment terms are the schedule that ties each payment to a production milestone and to a document you can verify before the money leaves your account. For a first order the market baseline is a deposit with the balance before shipment, most often quoted as T/T; a large or first-time order may use an L/C at sight instead. Four things decide what a factory will offer: order value, how much of the window is custom to your drawings, whether you inspect before shipment, and who arranges freight. This guide compares T/T and L/C structures, follows a 30/70 schedule from purchase order to bill of lading, lists the contract clauses that protect a deposit, sets out how a deposit is recovered if the factory does not perform, and flags the payment requests a first-time buyer should refuse. It assumes a first order of custom windows; trade finance and currency hedging are out of scope.

The deposit is not a service fee: it pays for aluminium profile, glass and hardware bought to your drawings. Production runs from deposit and drawing freeze together — typically 25–45 days, as confirmed on the quotation. Aluminum window systems are made per opening, so nothing is ordered before drawings are signed.

T/T, L/C at Sight, Usance L/C or Open Account: How the Risk Moves

None is inherently safer; each moves risk to a different party and charges differently for it. Read the cost column as categories, not rates.

No structure closes the quality gap: a payment term decides when money moves, not whether the window is right. Pair every structure with pre-shipment inspection.

How a 30/70 T/T Schedule Works From Purchase Order to Bill of Lading

30/70 — 30% deposit, 70% balance before shipment or against a B/L copy — is the most commonly quoted split in this trade. It is a convention, not a guarantee: every step needs a document.

1. Proforma invoice. Names the contracting entity, bank account, currency, Incoterm (FOB Nansha, Shekou or Yantian; CIF/CFR on request) and schedule. The account name must match the contracting company.
2. Deposit. 30% of contract value; no material is cut until it clears.
3. Drawing freeze. You sign and date the shop drawings and approve the sample or colour; the production clock starts here.
4. Production. Typically 25–45 days after deposit and drawing freeze for common finishes and glass, longer for complex glass or special colours; confirm on the quotation.
5. Pre-shipment inspection. Your inspector or a third party checks quantity, dimensions, finish and glazing against the frozen drawings.
6. Balance. The remaining 70%, before shipment or against a B/L copy if the contract says so.
7. Documents and release. The seller surrenders the originals or instructs a telex release; you take delivery at destination.

The B/L-copy trigger needs precision. You pay after loading, once the carrier issues the bill; the seller then releases the originals or authorises a telex release. It is not payment on arrival: the vessel may still be at sea, and cargo risk stays with you. And 30/70 is a share of contract value, not a price: see how aluminum window pricing is built per square metre.

When Does an L/C at Sight Make Sense for a First Order?

An L/C at sight makes sense when the amount is large enough that losing it would hurt, and neither side has enough history to trust the other. The issuing bank pays against documents that comply with the credit — a different risk from the buyer's willingness to pay.

It costs an issuing commission, a cash margin or collateral blocked for the life of the credit, amendment charges, and discrepancy charges when documents do not match the credit exactly. No fixed percentage applies across banks: ask your bank for its schedule and required margin.

The rules are the ICC's UCP 600, and payment turns on whether the documents comply with the credit. What the bank does not do is open a crate: a documentary credit is not a quality certificate, it pays against paper. Pair it with an inspection report named as a required document. If the windows arrive wrong, the L/C has done its job; you still have a claim.

Six Contract Clauses That Protect Your Deposit

Each clause answers one question: if this goes wrong, where is my money? Put them in the contract or PO; a promise in an email is not a clause.

• Payment schedule. Each amount as a percentage of contract value, the currency, the trigger event, the due date, and who pays bank charges. Without it, 30/70 is a slogan.
• Drawing-freeze definition. The signed drawing revision, the approved sample or colour, the revision rounds included, and the date the production clock starts. Without it, the lead time never begins.
• Balance release documents. The exact trigger — B/L copy, original set or inspection report — and who presents it. Without it, "before shipment" means whoever holds the goods.
• Account identity and change control. Payment only to the account named in the contract, account name equal to the contracting entity, changes only by stamped amendment. Without it, one email redirects your balance.
• Delay remedy. A remedy per day of delay and a cap, tied to confirmed lead time rather than a calendar date. Without it, a late container costs storage and installation days.
• Retention or holdback. The mechanism — a percentage held for a stated period after delivery, released against named documents. Whether a factory accepts one, and at what percentage, is negotiable.

Write all six to survive a change of staff.

Payment and Deposit Clause Wording You Can Adapt

These passages are commercial starting points, not legal advice. Have counsel review them under the governing law of your contract; nothing here selects a jurisdiction.

Payment schedule. A deposit of [ ]% of the contract value is payable by T/T within [ ] banking days of the signed proforma invoice. The balance of [ ]% is payable before shipment, or against the documents named in Annex [ ]. Bank charges outside the seller's country are the buyer's.

Bank account. Payment shall be made only to the account named in this contract, and the account name must be identical to the contracting party. Any change requires a written amendment signed and stamped by both parties; the buyer will confirm it by telephone with a known contact before paying.

Retention. The buyer may retain [ ]% of the contract value until [ ] days after delivery, or until the defects liability period in clause [ ] ends, whichever is later. Release is against the acceptance certificate and the final invoice.

Deposit refund on seller default. If the seller fails to ship by the date in clause [ ] for reasons attributable to the seller, and does not cure the failure within [ ] days of written notice, the buyer may terminate this contract by written notice. The seller shall then refund the deposit, and any amount paid for goods not delivered, within [ ] banking days of that notice. The contract should describe the deposit as an advance payment against the contract price, not a fee. Disputes are finally settled by arbitration administered by CIETAC, HKIAC or SIAC under its rules, seated in [ ].

Two tests before sending these: does every trigger name a document, and does the account clause name the entity that signs? Then have counsel review the adapted wording — this is a commercial starting point, not legal advice.

If the Factory Takes the Deposit and Does Not Perform

Once a T/T deposit reaches the seller's account, it is an unsecured claim on that company. A clause gives you a right to the money back; it does not put the money back. The only arrangements that reduce that exposure are an advance payment guarantee from the seller's bank, an escrow account, or a payment instrument such as an L/C, where the bank pays against documents instead of you paying in advance. A guarantee is usually reserved for larger orders, so expect a small first order to be quoted without one. That is why the size of the deposit is itself a risk decision.

When the shipment date passes without goods, move in writing and on a clock. Send a notice that names the refund clause, the missed date and a cure period, and copy the signatory rather than only the salesperson. Send it to the address and email named in the contract and keep the delivery record. A reply that promises shipment without a date is not a cure. Do not send more money to "unlock" production: that is the most common way a contained loss becomes a large one.

Assemble the file before you need it:

• The signed contract or PO with the deposit and refund clauses.
• The proforma invoice showing the account name, and the bank's SWIFT confirmation or payment receipt.
• The signed drawing revision and the sample approval record.
• The agreed shipment date, and any written extension of it.
• Your notice of default and proof that it was delivered.
• The seller's company registration details, because the claim runs against the legal entity, not the brand or the salesperson.

There are three routes, and they differ more in cost than in principle. Negotiation or mediation is the cheapest and fastest, and it produces a settlement only if the seller agrees to pay it. Arbitration is binding and travels: an award made in a contracting state of the New York Convention is enforceable in the other contracting states, which is why cross-border supply contracts usually choose it. Litigation in the seller's local court can be cheaper to file, but a judgment from that court is not automatically enforceable in most buyer markets, so a win may not produce money. Arbitration bodies typically charge by reference to the amount in dispute, and counsel, translation and travel sit on top.

The decision rule is arithmetic. Compare the deposit at risk with a realistic budget for a contested claim — filing fee, counsel in two countries, translation and travel — and with the time it will take. On many first orders the deposit is smaller than that budget, which means the rational move is not to sue but to stop paying, secure any documents or goods you already hold, and write the loss off. If the deposit is large enough to justify a claim, choose the forum in the contract before you pay, not after. A clause naming arbitration in a neutral seat is worth more than a promise to resolve disputes amicably.

Prevention is cheaper than recovery. On the next order, ask for an advance payment guarantee, split the deposit across two milestones tied to the drawing freeze and to a production start you can verify, use escrow where the platform offers it, and keep the first order small enough that losing the deposit does not stop the project. None of these removes the risk; each caps it.

Which Documents Should Trigger Each Payment?

A document only counts if it can be checked against an independent source. Before each payment, match product, quantity and destination port to the purchase order.

• Proforma invoice and bank details. Check account name, currency and schedule against the contract, not the email.
• Commercial invoice and packing list. Quantities, carton count, weights and the marks linking the cargo to your order.
• Bill of lading. Bill number, vessel, container and port of discharge, checked on the carrier's tracking page, not the PDF.
• Certificate of origin and insurance. The CO supports duty treatment at destination; insurance matters under CIF.
• Inspection report. Issued by your inspector or a third party before shipment, listing what was checked and the result.
• Certificate scope. A report or certificate covers a named series, not the whole catalogue; check yours against the certificate scope behind each window series.

What does not count: a screenshot, a messaging-app photo, or a forwarded PDF with no traceable reference. Those show someone said something, not that a carrier, bank or inspector issued it.

Payment Red Flags and Bank-Detail Fraud Checks

Before the payment conversation, know who you are paying. The steps are in vetting an aluminum window manufacturer before you pay; this list covers what should stop a transfer.

• 100% prepayment. No milestone protects you, and the deposit is no longer a deposit.
• A personal account, or an account name that differs from the contracting entity. Pay the company that signs, not the person answering the phone.
• An email changing bank details mid-order. The most common fraud pattern in the trade; treat it as hostile until verified independently.
• Pressure to pay before documents exist. Urgency is the tool that defeats verification.
• Refusal of third-party or pre-shipment inspection. A supplier who will not let an inspector in is telling you what it would find.
• An abnormally low quote paired with an abnormally high deposit. The deposit is where the risk sits.

Verify any change in three steps: call back on the number in the contract, never the email; confirm the account name matches the contracting entity, including legal form; accept only a stamped amendment. If a step fails, do not send the money — or a partial amount to test the account.

How Payment Terms Improve on Repeat Orders

The second order is where terms move, because you have evidence: a clean payment record, an inspection pass rate you can quote, and repeat volume the factory can plan around.

• A lower deposit percentage, subject to factory approval.
• Open account terms for part of the value, usually against credit insurance, subject to factory approval.
• A retention held past delivery, subject to factory approval.
• A smaller L/C covering only the deposit, subject to factory approval.
• Platform escrow in place of a direct transfer, under the platform's rules.

Do not push price and terms in the same first-order negotiation. Repeat-order and dealer terms are in dealer and repeat-order terms.

Frequently Asked Questions

Is 30/70 T/T normal for aluminum windows from China?

Yes. A 30% deposit with a 70% balance before shipment, or against a B/L copy, is the most commonly quoted split for made-to-order aluminum windows. It is a convention, not a rule, and the deposit is negotiable on larger orders.

Should I pay the balance before shipment or against the B/L copy?

Pay against the B/L copy if the contract allows: the goods are loaded and the carrier has issued a bill you can verify. Paying before shipment is cheaper but exposes you if the shipment slips; transit risk stays with you.

Can a first-time buyer negotiate a lower deposit?

Sometimes, but not usually on a first order, and never by asking alone. A lower deposit is normally traded for a larger order value, a longer relationship, or a bank instrument replacing part of it.

What should I do if the factory changes its bank details mid-order?

Stop and verify. Call the number in the signed contract, not the email, and confirm with a second person. Accept only a stamped amendment whose account name matches the contracting entity; if you cannot verify it, do not pay.

Does an L/C guarantee the windows meet the specification?

No. A letter of credit responds to documents, not quality. The bank checks the invoice, packing list, bill of lading and any named inspection report against the credit; it never opens the crate. Quality protection comes from specification and inspection.