What is your quality control and testing process before shipping thermal printers?

Yunli implements a rigorous, multi-step testing protocol for all printers prior to shipment to ensure reliable performance. Our standard pre-shipment quality control strictly covers six critical stages:

1. Physical Appearance & Structural Inspection: Verifying casing integrity and assembly precision.
2. Print Quality & Barcode Verification: Ensuring clear outputs and high barcode scannability.
3. Connectivity Testing: Validating stable data transmission via Bluetooth and USB interfaces.
4. Battery & Charging Tests: Evaluating power performance and charging reliability.
5. Paper-Out Alert Test: Confirming the sensor accurately triggers low-paper warnings.
6. Aging & Long-Duration Printing Test: Running continuous operations to verify hardware durability.

By executing this comprehensive 6-step checklist, we effectively minimize defect rates and guarantee that global clients receive fully operational, market-ready hardware.