Supplier Vetting and Quality Control in China
Eva Solutions vets your manufacturers in China and controls the quality of your goods — from the factory audit through inspection during production to final inspection by AQL standard, documented with a photo and video report.
- Supplier vetting: business license, factory audit, references
- Quality control along the production line through to loading
- Final inspection before shipment by AQL Level II
- Photo and video report with a pass/fail decision
- Our own team on the ground instead of externally booked inspectors
Why Supplier Vetting and Quality Control in China?
On B2B platforms, every supplier looks reputable. Vetting shows whether a real factory with export authorization stands behind the profile, or an intermediary. The check before shipment shows whether the goods match your specification.
Eva Solutions checks both: the supplier before you pay, and the goods before they leave China. You book the inspection as part of our sourcing or on its own, even for a manufacturer you found yourself.
That way you find reliable manufacturers in China and flag defects while the goods are still in the country.
Supplier Vetting: Is Your Manufacturer Reliable?
Before the first order, we verify the factory on site.
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Business License and Export Authorization
Business license, registered business purpose and export authorization — this separates real manufacturers from mere trading companies.
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On-Site Factory Audit
Our team visits the factory, checks facilities, capacity and workflows, and verifies that the operation makes your product itself.
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References, Certificates, and Capacity
We review export markets, references and certificates, and assess whether the factory can handle your volume on schedule.
Quality Control Along the Production Line
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Pre-Production Inspection
Raw materials, components and samples before the run begins. We resolve deviations while corrections are still inexpensive.
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During-Production Inspection
The first units once around 10–30% has been made. Errors show up early, before the whole batch is affected.
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Pre-Shipment Inspection
Finished, packaged goods by AQL standard: quantity, workmanship, function and specification — before loading.
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Loading Inspection at Container Stuffing
Unit count and condition as the container is loaded, so the right quantity is shipped undamaged.
- Usually within 24 hours on working days
- A first, non-binding assessment of your project
AQL Standard: How We Measure Quality
The final inspection follows the AQL standard (Acceptable Quality Limit) on a sample basis — typically AQL Level II:
- Sample size based on lot size and inspection level
- Defect classes critical, major, and minor defects
- Defect limits per class, the basis for the pass/fail decision
Photo and Video Reports
We document every inspection with a report:
- Photos and video inspected goods and packaging
- Measurements sample size and defects found per defect class
- Pass/fail decision clear, with reasoning
You decide on the basis of facts, without traveling to China yourself.
Process: How the Inspection Works with Eva Solutions
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Inquiry and Scope of Inspection
You name the manufacturer, product and specification; we define which inspections make sense.
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Supplier Vetting
We verify business license, capacity and references, with an on-site factory audit on request.
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Inspections During Production
Inspections before production starts and during manufacturing; we report deviations early.
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Final Inspection by AQL
Sampling check of the finished goods, result documented.
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Report and Decision
Photo and video report with pass/fail; in case of defects we file a claim directly with the manufacturer.
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Release and Loading Inspection
After your release, we accompany the loading and hand over to consolidation and transport.
Costs: What Does an Inspection in China Cost?
We calculate every inspection individually; there are no flat rates. We disclose all cost items transparently.
- Type and Number of Inspections
- A single final inspection, or a combination of audit, in-process inspection and loading inspection.
- Inspection Effort
- Unit count, product complexity, and the functional tests required determine the time per inspection.
- Factory Location
- Travel and region affect the inspector's effort on site.
Who Are Supplier Vetting and Quality Control Right For?
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Importers Before the First Order
Who want to secure a new manufacturer before they pay.
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Amazon Sellers
Who rule out defects, instead of risking returns and suspensions.
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Retailers with Quality Problems
Whose last batch did not match the specification.
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Companies Without a Team on the Ground
Who cannot inspect in China themselves.
Why Eva Solutions for Quality Control in China?
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Our Own Team on the Ground
Our native-speaking staff carry out inspections themselves — no externally booked inspectors.
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Inspection and Claims from One Source
We find defects and resolve them directly with the factory in Chinese — no language barrier, no lost time.
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Our Own Lawyers
In-house lawyers on the ground support you in case of breach of contract or disputes.
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Office and team in Germany
Our office in Waldrach, Germany (Naga Technologies GmbH) — also our contact and service address. Reachable during German business hours, with personal advice and transparent reports.
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Part of the Entire Supply Chain
Sourcing, vetting, production, consolidation, and shipping mesh together — from selection to delivery.
Four locations in China
Offices and warehouses in the north and south of China – where we collect and check goods and prepare them for export.
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Harbin
Head office and warehouse
Logistics park in Harbin where our warehouse is located
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Guangzhou
Office and warehouse
Guangzhou: the building that houses our warehouse
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Shenzhen
Office and warehouse
Shenzhen: the building that houses our office and warehouse
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Sanya
Office, IT and technology
Yazhou Bay Science & Technology City in Sanya, home to our office
Frequently Asked Questions
How does quality control in China work?
We check the goods at several points: before the production start, during manufacturing, and as a final inspection before shipment by AQL standard. We document every inspection with a photo and video report and a pass/fail decision.
What is AQL Level II?
AQL (Acceptable Quality Limit) defines how many defects in a sample are acceptable. Level II is the standard inspection level: it determines the sample size based on lot size and distinguishes critical, major, and minor defects.
What types of inspection are there?
Pre-production inspection, during-production inspection, pre-shipment inspection, and loading inspection at container stuffing. Depending on the order, we combine them.
How do I check a supplier in China?
Through the business license, export authorization, references, and an on-site factory audit. This is how a reliable manufacturer can be told apart from a mere trading company, before you pay.
What is a pre-shipment inspection?
The final inspection of the finished, packaged goods before shipment. Quantity, workmanship, function, and specification are checked by sampling according to AQL — while defects can still be flagged in China.
What does an inspection in China cost?
The cost depends on the type and number of inspections, the inspection effort, and the factory location. A single final inspection is cheaper than a combination of audit and several inspections. We prepare a precise calculation on request.
Can I book quality control for my own supplier?
Yes. You book the inspection on its own, including for a manufacturer you found yourself — independent of our sourcing.
What is a factory audit?
An on-site visit to the factory where we check the production facilities, capacity, workflows, and the authenticity of the operation — the basis for assessing a manufacturer before the first order.
Ready to Have Your Manufacturers and Goods Inspected in China?
Tell us the manufacturer, product, and specification — we define the right scope of inspection and deliver a photo and video report with a clear pass/fail decision.
Need every detail in one place? Download the questionnaire, fill it in and send it to contact@versendex.de.
Planning a project in China?
Send us your enquiry with the product, quantity and destination. We'll work out which steps you need and come back to you with a proposal.