Contact Dianfan
Dianfan telescopes are sold exclusively on Amazon, so every order, warranty claim, and support question is handled directly inside your Amazon account — usually within a day.
Product support
Missing parts, setup questions, or something not working right? Open your Amazon order and use Your Orders → Get product support. The Dianfan team responds there with your full order already attached.
Go to your Amazon orderReturns & warranty
Every Dianfan telescope is covered against manufacturing defects. Returns and replacements are processed through Amazon's standard return window, so you're covered by Amazon's guarantee on top of our warranty.
Company address
Dianfan1540 Market St #103
San Francisco, CA 94102
United States
Business hours
Monday – Friday, 9 AM – 5 PM PDT
Closed on US federal holidays.