620W Bifacial Solar Panel Monocrystalline N-Topcon High Efficiency for House, Farm Use

1)Their procurement cost of solar cells is low. They always use reverse current and low-efficiency solar cells and never do Flash and EL testing at all. 2)Some factories are poorly equipped and staffed mostly by old people, which reduces the efficiency and use life of solar panels. For price, our long-term pricing is 10% lower than tier 1 brands, because we do not have advertising costs, do not need to spend a lot of money on management of overseas office.

Yes, our customers often to use BV, SGS and other third-party companies to carry out on-site testing and inspection services. Our company will fully cooperate with the third-party company, We hope to form a long-term and stable cooperative relationship in the case of customer recognition. Besides, for the value of goods exceeding two containers, we will bear the inspection cost of the third-party company. For some countries that need CQC certification, we will also cooperate to provide.

Our regular payment is 30% in advance and 70% before shipment, we accept third party inspection before shipment. We also accept LC at sight. For some countries, we accept 30% prepayment and 70% payment against copy of bill of lading.

First of all, we will provide warranty and flash test report with product bar code when we ship out. During the warranty period, you can submit the claim sheets with the flash test report and warranty, we will provide after-sales service.

Yes, it is bifacial solar panel, which means it can generate an additional 5% to 25% electricity from the back side.