For any issues that cannot be resolved, please promptly contact your seller or manufacturer and provide a detailed customer complaint form to facilitate quick handling of your concerns. In the form , you need to provide the machine datemark, problem discription, picture ,videos and Environmental conditions for  operation. Based on these information , we can give a quick and exact feedback and solution for trouble shooting. You can also download the trouble shooting documents on our website and see more maintenance videos on our Youtube Channels. We also welcom all dealers to have a training at our factory, we will support their daily living and eating  cost.