After buying 2 laptops on AMAZOM (CHUWI brand), one of them had a technical issue with Windows 10.I look at CHUWI website and Google search to find the after-sales service.I was asked to send the laptop in China, which for me wasn't convenient at all for a few reasons.I finally got in touch with the CHUWI representative in U.S. who sells the products on Amazon.I was very pleasantly surprised by the punctuality and follow-up of my messages as well as the involvement and commitment to solve my technical issue.It is important to me and comforting to know that CHUWI offers one year warranty, for products purchased on Amazon.I shall definitively look at CHUWI products again.Joseph