Supplier Reviews – from registry check to production readiness
You know the supplier and the decision the review must support. Choose the depth that matches your question: registry and documents, operating situation, product-specific production capability or production readiness. Each depth provides a defined report with observations, supplier claims, missing evidence and a WJY recommendation. If the review question is still unclear, start with CHECK.
At a glance
- Suitable for
- Purchasing teams who want a specific supplier reviewed before a deposit, sample order, tooling release or series start – existing suppliers included.
- What we do
- Supplier Quick Check: registry data and documents, remotely
- Compact Factory Visit: operating situation and equipment on site
- Technical Supplier Review: production of your product against a review plan
- Production Readiness Review: planned production trial under series conditions
- Optional beforehand: a Video Factory Tour. It shows remotely whether an on-site review or trip is worthwhile. It is not a fifth review depth and does not replace an on-site review.
- Your result
- Depending on the depth, you receive an overview of open questions, a photo report or an assessment of deviations, missing evidence or agreed production evidence. Each report includes a WJY recommendation. It is not a general quality seal.
- What you can decide
- Whether to request quotations, pay a deposit, order samples or approve tooling or series production, and which conditions must be met first.
- Price
- Supplier Quick Check €190
- Video Factory Tour €290
- Compact Factory Visit €490
- Technical Supplier Review €790
- Production Readiness Review from €1,990
- You send us
- Send the supplier name, location, product context and the three main questions you need answered.
- Not the right fit if
- it is not yet clear what in your procurement situation should be examined – then start with CHECK. If you first need to find a new supplier, BUILD is the right route.

You can see what we checked, what the supplier claims and which evidence is missing.
Included in the service
Your question: does the company exist as described, and do its documents match?
- How we work: remotely; registry data, available business documents, visible inconsistencies.
- You receive: a compact overview with open questions within two working days.
- What you can decide: whether quotations, samples or a visit to this company are worthwhile.
- Price: €190. Limit: no statement about production or quality.
Your question: does the operating situation at the factory broadly match what the supplier presents?
- How we work: on site, up to four hours at the factory, within 100 km of Nanjing or on a shared route; operating situation, equipment, production flow and agreed documents.
- You receive: a photo report within three working days.
- What you can decide: whether the supplier makes the shortlist or deserves a product-specific review.
- Price: €490. Limit: no product-specific review plan.
Your question: can this site produce your product with the necessary processes, inspection equipment and quality controls?
- How we work: on site, one day against a product-specific review plan; critical production steps, inspection equipment, quality controls.
- You receive: an assessment with deviations and missing evidence within three working days.
- What you can decide: whether to proceed with sampling or a tooling order, and which conditions must be met or evidence provided first.
- Price: €790. Limit: not a certified audit, no series assessment.
Your question: does a planned production trial provide the agreed evidence under series conditions?
- How we work: on site, one item, one production trial, one day including preparation and evaluation.
- You receive: an assessment of the agreed production evidence and any further measures required. We confirm the report date before work starts.
- What you can decide: whether to approve series production or attach conditions to it.
- Price: from €1,990. Limit: requires a selected supplier and the prerequisites listed below.
Process
| No. | Step | Description |
|---|---|---|
| 01 | Confirm the review objective | We define the supplier, site, product context, decision question, expected evidence and photo permission before the review. |
| 02 | Review and clarify inconsistencies | Depending on the review depth, we check registry data and documents or inspect the agreed factory areas, production and inspection equipment, and records. We distinguish supplier claims, observations and missing evidence. |
| 03 | Deliver report and recommendation | The report shows the findings, their implications for purchasing, missing evidence and the WJY recommendation for the next step. |
Deliverables
| No. | Deliverable | Description |
|---|---|---|
| 01 | Review report | Scope, observations, supplier claims, visible inconsistencies and recommendation. |
| 02 | Photo and evidence record | For on-site reviews, it contains the agreed photographs. For every review, it records the status of the required documents. |
| 03 | Open-Items List | Missing evidence, owners, dates and recommended follow-up. |
SUPPLIER REVIEW – examine one named supplier
We examine one named supplier against a defined review objective. You choose the review depth according to the question you need answered.
| Service | Price | Scope and result |
|---|---|---|
| Supplier Quick Check | €190 | One named supplier: registry data, available business documents, visible inconsistencies. Compact overview with open questions within two working days. |
| Video Factory Tour | €290 | We prepare review questions, guide the tour for up to 60 minutes and record our assessment. If the supplier finally refuses or no replacement date is agreed within ten Chinese working days, we refund 50% under the service-page rule. If an on-site review of the same supplier follows within the same project, we credit the Video Factory Tour in full against its price. |
| Compact Factory Visit | €490 | One site within 100 km of Nanjing or on a shared route with other appointments; up to four hours at the factory. Operating situation, equipment, production flow and agreed documents; photo report within three working days. |
| Technical Supplier Review | €790 | One site, one day, product-specific review plan: critical production steps, inspection equipment, quality controls. Assessment with deviations and missing evidence within three working days. |
| Production Readiness Review | from €1,990 | For an existing supplier with a planned production trial, we review one item in one trial during one day on site, including preparation and evaluation. You receive our assessment of the agreed series evidence and the actions still required. Prerequisites are an approved drawing, reference sample, named critical characteristics and a scheduled production trial. |
The Video Factory Tour is a separate service that helps establish remotely whether an on-site review is worthwhile. We charge individual factory visits outside 100 km of Nanjing as a field day (€690), plus travel costs under “Day rates and travel costs”. A quick check provides orientation. For a dependable assessment of your product, choose the Technical Supplier Review.
Contract terms: Terms section 13: On-site reviews: access refused and restricted evidence Terms section 9: Field days, travel time and travel costs
The accepted written proposal for the confirmed scope remains authoritative.
Prerequisites for the Production Readiness Review
If a prerequisite is missing, we offer the additional work in advance.
- released drawing with revision status;
- reference or first-off sample;
- named critical characteristics and measurement bases;
- a scheduled production trial with an agreed quantity.
Common questions about this service
Is this a certified factory audit?
No. Where accredited or standards-based assessment is required, we coordinate the appropriate qualified testing partner.
Can you review an existing source?
Yes. You can review an existing supplier or establish its actual situation before the next procurement step.
What does a factory visit outside the Nanjing radius cost?
Outside that radius, individual factory visits cost a field day (€690) plus travel. The rules under “Day rates and travel costs” on the pricing page apply. The Technical Supplier Review retains its fixed price plus the same travel rules.
What happens if the supplier refuses access?
Refusal of access and unsuccessful inspections: Before departure, WJY obtains confirmation from the supplier of the appointment, responsible contact person and agreed inspection scope, including the required access rights. If the supplier withdraws its agreement before WJY departs and the inspection therefore cannot take place, WJY will not travel and will refund 70% of the agreed inspection fee. The remaining 30% covers preparation already undertaken and efforts to secure access. The client may demonstrate that no costs or substantially lower costs were incurred. If access is refused after departure but before arrival, WJY will charge the preparation and deployment effort actually incurred, up to the agreed inspection fee, taking account of costs saved, and will refund any unused portion of the fee. If the supplier refuses access only upon arrival despite prior confirmation, or the agreed contact person fails to appear, the full inspection fee remains payable, provided WJY has properly prepared the assignment, committed the agreed inspection time and made reasonable efforts to obtain access. Costs saved or inspection capacity used for other assignments will be taken into account. WJY will document the circumstances and actions taken. If WJY is responsible for the failure, the inspection will be rescheduled without an additional service fee or the inspection fee will be refunded in full. WJY will bear additional costs attributable to its own failure. Third-party costs you approved that can no longer be refunded are borne by you.
Terms section 13: On-site reviews: access refused and restricted evidence
