What Customers Care About
The goal is not extra testing, but verifiable and traceable consistency between approved samples and bulk goods.

Sample-to-bulk Consistency
After sample approval, purity, impurity limits, particle size, moisture and packaging requirements become the verification baseline for bulk batches.
Retained Samples & Documentation
COA, SDS, third-party reports, retained sample records and exception reviews are archived by order and batch for future repeat supply and traceability.
Third-party Collaboration
When required, Madesino coordinates local or China-based third-party labs, sample transfer, testing scope and report delivery to strengthen delivery confidence.
Testing Coordination Scenarios
Testing support is embedded into sample approval, bulk purchasing, annual supply and exception review workflows.

Pre-purchase sample validation
For new suppliers, products or specifications, confirm sample performance and key indicators before price, lead time and bulk terms.
Pre-shipment batch review
Review critical indicators, packaging, documents and retained sample status before shipment to reduce cross-border dispute cost.
Exception review records
When deviations occur, coordinate supplier, lab and customer confirmation to create retest, judgement and handling records.
Testing Service Flow
Connect customer approval, third-party testing and batch traceability to reduce cross-border quality uncertainty.
- 01
Confirm Indicators
Define purity, impurity limits, particle size, moisture, packaging and documents.
- 02
Sample Approval
After customer sample approval, lock the reference for bulk comparison.
- 03
Bulk Verification
Before shipment, complete agreed testing, retain samples and archive documents.
- 04
Exception Handling
If deviations appear, coordinate supply, testing and customer review records.
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