Sourcing glossary
Proforma invoice
Also known as: PI, Pro forma invoice, 形式发票, 견적송장
A preliminary invoice the supplier issues before production or shipment, setting out goods, prices, payment terms and bank details, used to confirm the order and pay the deposit.
In China sourcing the PI is often the de facto contract: you pay the deposit against it. Check that the company name and bank account holder match the supplier's business licence, and that specifications, packaging, Incoterm and lead time are written in, not just price and quantity.
A PI is not the commercial invoice used for customs clearance; that is issued at shipment. A last-minute change of bank details on a PI is a classic fraud sign — confirm by phone before paying. See how to pay Chinese suppliers.
Related terms
Guides that use this term
QC
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Private label
Custom Packaging from China: Options, Printing, MOQs and Labels
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Updated 2026-09-24 · 5 min read
Platforms
Alibaba Trade Assurance: What It Covers and How to Claim
What Alibaba.com Trade Assurance covers and excludes, which payments qualify, refund windows, delivery-delay compensation and how to file a claim.
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Compliance
CE, UKCA, FCC and CPC: Product Certifications for Imports from China
What CE, UKCA, FCC and the US Children's Product Certificate mean, which products need them, who is responsible, and how to check a supplier's certificate.
Updated 2026-09-22 · 7 min read
QC
Defective Goods from China: What to Do When Your Order Arrives Wrong
Defective goods from a Chinese supplier? How to document evidence, use your PO terms, negotiate a fix, file Trade Assurance or insurance claims, and prevent repeats.
Updated 2026-09-21 · 5 min read
Part of Incoterms & Payment.