The website of Jiuyang official website is:

I'm very sorry for the trouble! Jiuyang's products are guaranteed nationwide. You can also go to the local Jiuyang after-sales service department and ask the staff to check the machine for you: /netService.html? You can check the contact information of the national service department here, and you can choose it nearby.

If you still have questions, please feel free to ask Jiuyang Sunshine Service.