Thank you for using CAD FastView! If you encounter any issues or have any suggestions and feedback, please contact us through the following channels:

• Frequently Asked Questions:
• Q: What drawing formats are supported?

A: The App supports DXF (including ASCII and binary formats) and DWG format drawing files.

• Q: How do I import drawing files?

A: You can import files through the following methods:

1. Tap the "+" button on the home page → Select "Import File"

2. Receive drawing files via WeChat → Choose to open with CAD FastView

3. From other apps via the "Share" menu → Select CAD FastView

• Q: Can annotations be exported together with the drawing?

A: Yes. Premium members can merge annotations into the drawing and export them as DXF or DWG format files.

• Q: Why do some features require a subscription?

A: Drawing editing, annotation export, format conversion, AR measurement, and other features are premium features that require a premium membership subscription. Basic viewing features are available for free.

• Q: How do I cancel my subscription?

A: On your iOS device: Open "Settings" → Tap your Apple ID → "Subscriptions" → Find CAD FastView → Tap "Cancel Subscription".

• Q: What should I do if the drawing displays incorrectly?

A: Please verify that the drawing file is not corrupted. For complex drawings, we recommend saving them as standard format in PC CAD software before importing. If the issue persists, please contact technical support.

• Contact Information:
• *Email: [email protected]
• *Feedback Channel: In-app feedback entry on the "Profile" page