Public trade data can add useful evidence to a sourcing decision, but it is easy to ask it to prove too much.
Official statistics can show whether a product moves between markets and how that flow changes. Public U.S. ocean bill-of-lading databases may reveal shipment relationships between named entities. Some government directories can show that a registered business traded in a product category during a covered period.
None of those records, by itself, proves that a supplier manufactured the goods, owns the factory, has spare capacity, met the required specification or remains commercially reliable today.
The practical use of trade data is not to “approve” a supplier. It is to identify signals, contradictions and questions that deserve verification before the next commitment.
Start with the type of evidence you have
Market-level statistics
China Customs, UN Comtrade and WTO data help compare products, economies, partners, values, quantities and tariff structures.
They do not identify a purchasing decision-maker.Shipment-level records
Public U.S. ocean records may show shippers, consignees, ports, dates, descriptions and recurring relationships.
They do not cover every mode, entity or confidential record.Trader-directory records
Government directories may connect registered businesses with covered goods and trading periods.
They do not necessarily disclose value, customers or contacts.Market-level statistics
China Customs statistics, UN Comtrade and the WTO Tariff & Trade Data platform are designed primarily for product-, economy- and partner-level analysis. They can help a buyer examine reported value and quantity over time, major origin and destination markets, partner concentration, tariff structures and import patterns.
They do not identify the person responsible for a purchase. They also do not confirm an individual factory's shipment history.
Shipment-level records
ImportInfo and ImportYeti use public U.S. ocean import manifest or bill-of-lading data. Depending on the record and platform, a user may see shippers, consignees, ports, dates, descriptions and recurring relationships.
This evidence has structural gaps. Air and land movements may not appear. A company may use another legal entity, an importer of record, a freight forwarder or a confidentiality request. Product descriptions may be broad, and the consignee may not be the final buyer.
A missing result does not prove that a company has never exported to the United States. A visible shipment does not prove who made the product or whether the relationship remains active.
Trader-directory records
HM Revenue & Customs' UK Trade Info service provides a useful third category. Its Find UK traders tool can show registered business names, addresses, trading activity, covered periods and goods descriptions for certain UK or Great Britain importers and exporters.
HMRC also states what the tool does not provide: transaction quantities or values, traders' customers, VAT or EORI details, and countries of movement. Some businesses may request removal. The tool can support company and category verification, but not order-size estimates or buyer-contact discovery.
A seven-step sourcing workflow
1. Define the product before selecting data
Write down the product description, material, use, critical specification and likely HS classification. A broad product name can combine items with different duties, regulations and production processes.
Use a six-digit HS code for an initial international comparison, then verify the destination country's more detailed tariff line. Treat an AI-generated or supplier-provided code as a hypothesis until it has been checked against the actual product.
2. Test whether the market signal is real
Review at least 24 to 36 months where the data allows it. Compare value, quantity, unit-value direction, partner share and reporting gaps.
Do not translate one increase into “demand is booming.” A rise in value with lower quantity could reflect price, product mix, currency or classification changes. Mirror statistics reported by two partners may also differ because of timing, valuation and methodology.
3. Check the tariff and policy context separately
WTO Tariff & Trade Data is a useful starting point for applied and bound tariffs, bilateral trade, time series and import patterns. It is not a landed-cost calculator for a specific order.
Before a purchase decision, confirm the current destination-country tariff line, origin rules, preferential treatment, trade-remedy duties, quotas, product regulation, import taxes and any licence or documentation requirement.
4. Look for shipment signals only where coverage fits
For a supplier that claims regular U.S. ocean shipments, a bill-of-lading database may help test whether a matching legal name, address, product description or recurring relationship appears.
Record the database and access date, the entity name and role shown, shipment dates, product wording, name or address variations, and the known coverage limitations. Do not reduce the result to a binary “verified” or “not verified.”
5. Match the record to the supplier's legal and operating entities
Ask the supplier to explain how the exporter, manufacturer, trading company, Hong Kong entity and payment entity are related. Compare the answer with the business licence, quotation, contract, bank account, certifications and factory address.
An entity difference can have a legitimate commercial explanation. An unexplained difference is a verification task, not proof of fraud and not something to ignore.
6. Convert data gaps into evidence requests
If a supplier says it regularly makes the same product but the public description is too broad, request product-specific evidence: drawings, production records, test reports, a live process walkthrough, current sample work or inspection documents.
If a shipment record exists under another entity, ask for the relationship and contractual role. If no record appears, ask which transport mode, exporter name or customer confidentiality arrangement may explain the gap.
7. Make the commitment match the evidence
Trade data should influence the next check, not replace it. Increase assurance through measurable samples, quotation comparison, certification matching, factory verification, inspection, testing and controlled first-order terms.
For the complete process covering legal entity, production capability, quotation assumptions, samples, quality controls and first-order risk, use the main guide: How to vet a Chinese supplier before your first order.
A supplier-claim evidence table
| Supplier claim | Useful public signal | What still needs direct verification |
|---|---|---|
| “We export this product regularly” | Repeated records with a matching entity, address and product wording | Manufacturer role, specification, quantity, recency and confidentiality gaps |
| “We mainly serve the U.S. market” | U.S. ocean shipment pattern and destination ports | Air and land business, customer mix, current revenue and capacity |
| “We manufacture in-house” | Exporter identity and shipment continuity | Factory ownership, process performed on site, subcontracting and quality control |
| “We can meet target-market requirements” | Trade flow and destination-market activity | Product-specific standards, valid reports, lab scope, model and batch coverage |
| “We have long-term customers” | Recurring relationships between named entities | Contract continuity, performance, customer satisfaction and current account status |
What public trade data cannot prove
- who manufactured the goods;
- whether the listed consignee is the final buyer;
- the actual purchase price or margin;
- whether the shipment met specification;
- current capacity or lead time;
- ownership of machinery or a factory;
- valid product compliance;
- payment reliability or creditworthiness;
- the absence of air, land, confidential or differently named shipments;
- that a historical relationship remains active.
Frequently asked questions
Can public trade data verify a Chinese supplier?
It can support one part of verification by showing market-level trade or, in some jurisdictions and transport modes, named shipment relationships. It cannot replace legal-entity checks, factory capability review, product-specific evidence, samples, testing, inspection or payment-path verification.
Why can I not find a supplier in U.S. import data?
The supplier may export under another entity, use air or land transport, appear through an intermediary, use a different address or have confidential records. A missing result is a reason to ask better questions, not proof that the supplier has never shipped.
Does a bill of lading show the real buyer and price?
Not necessarily. A consignee or notify party may be an importer, logistics provider, related entity or agent. Public bill-of-lading data should not be treated as proof of the final buyer, negotiated price or commercial terms.
Is trade data enough to approve a supplier?
No. Approval should match the risk of the order and may require document checks, technical review, measurable samples, certification validation, a live or on-site factory check, inspection, testing and controlled payment terms.
Source record
- United Nations Statistics Division — Trade Statistics — official commodity- and partner-level trade statistics.
- WTO Tariff & Trade Data — official tariff and import data for more than 150 economies.
- HMRC UK Trade Info — Find UK traders guidance — coverage, available fields and excluded data.
- ImportInfo and current plans — U.S. import-manifest coverage, limitations and subscription access.
- ImportYeti FAQs — source method and gaps involving air, land, aliases and confidential records.
Sources were rechecked on 11 August 2026. Third-party platform coverage and commercial terms can change; confirm the current page before relying on access or export features.