After-sales service: non-human damage, Motherboard quality problems, no flower appearance, no impact on secondary sales, can be replaced, can be free warranty for one year. (Before shipment, all products will be delivered only after strict inspection by professional inspectors, which makes customers feel at ease and comfortable. Customers from domestic e-commerce platforms, cross-border e-commerce platforms and domestic trade channels are welcome to come to negotiate, large quantity and better price.