This listing is for a used (second hand) 3D printer for sale. 1. We offer after-sales technical support from Anycubic, but we only offer free after-sales support, no free replacement, There is no free after-sales replacement service. 2. This machine has not been repaired, but it cannot be ruled out that there are still some problems, so we hope you can understand. And we do not accept returns, please note. 3. We welcome buyers who are good at 3D printers to buy at a lower price, thanks! 4.After you receive the product, the machine is not perfect, any problem, welcome to contact us, we try our best to solve the problem for you.