Importing monocrystalline, polycrystalline and bifacial solar panels from Chinese PV manufacturers? CGF Inspection offers reliable Pre-Shipment Inspection service for photovoltaic modules before goods leave the factory.

Pre-Shipment Inspection will be arranged when more than 80% of production is finished. Our professional inspectors carry out random sampling according to recognized AQL standards. Both visual appearance inspection and necessary electrical performance tests will be implemented to evaluate overall product quality.

✅ Specification & Dimension Verification

Check panel length, width, thickness and frame size. Confirm model type, power grade, cell type and color tone match your approved sample and technical datasheet.

✅ Front Glass Surface Inspection

Check tempered glass for scratches, chips, cracks, residual glue, stains, bubbles and foreign particles which affect light transmittance.

✅ Solar Cell & Internal Layout Check

Inspect cells for micro-cracks, broken fragments, discoloration, hot spot risk, offset solder ribbons and uneven spacing between cells.

✅ Aluminum Frame Quality Audit

Check frame bending, deformation, surface scratches, oxidation marks, assembly gap, corner joint flatness and silicone sealing integrity.

✅ Junction Box & Cable Connector Inspection

Verify junction box adhesion, waterproof seal, internal wiring, diode working condition, cable length and connector matching.

✅ EL Electroluminescence Testing

Arrange EL test on sampled panels to discover invisible hidden cell cracks, broken grids and poor welding that cannot be seen by naked eyes.

✅ Power Performance Testing

Conduct power testing under standard test conditions, monitor Voc, Isc, Pmax to ensure actual output complies with rated nameplate parameters.

✅ Labeling & Export Packaging Inspection

Check nameplate information, barcode, certification logos and warning labels. Inspect protective film, corner protection, outer carton strength and correct shipping marks.

✅ Formal English Inspection Report

After on-site inspection, you will receive a full inspection report including dimension records, defect photos, EL images and power test data for your evaluation.

Avoid receiving defective solar modules and costly overseas returns. Arrange pre-shipment inspection for your solar panel orders with CGF Inspection.