Frequently Asked Questions
How do you ensure the quality of solar cells compared to cheaper market alternatives?
We implement a rigorous testing process including 3 EL tests and 2 Flash tests during production. This identifies hidden cracks and ensures no mixed cell grades are used, preventing the hot spot effect and potential fire hazards found in cheaper, non-tested panels.
What payment security measures are available for international buyers?
We offer standard 30% prepayment with 70% before shipment. For added security, we accept 3rd party inspections, LC at sight, and secure payment methods via established trade platforms where funds are held by a third party until shipping documents are submitted.
Can I inspect the products before final payment?
Yes, we fully cooperate with third-party inspection agencies like BV and SGS. For orders exceeding two containers, we even bear the cost of the third-party inspection to ensure customer satisfaction and build long-term trust.
How is the warranty handled for long-term performance?
Each shipment includes a specific warranty document and a flash test report corresponding to the product barcodes. During the warranty period, after-sales service is provided based on these reports and claim sheets.
Do you provide PV system design services?
Yes, our professional engineers design preliminary on-grid, off-grid, and hybrid systems. We provide data collection forms, bracket drawings, and remote installation guidance to ensure your system is optimized for local conditions.
What shipping terms do you recommend to avoid hidden fees?
We suggest using FOB or CIP terms. Under CIP terms, destination port charges are borne by the seller, providing more cost certainty for the buyer compared to CIF terms where destination charges can be unpredictable.
Wing Solar
