How to transfer developer profile to one mac to another mac

1. Export developer profile from old mac.
   • In the Xcode Organizer, select your team in the Teams section.
   • Click Export.
   • Specify a filename and a password, and click Save.
2. In new mac, 
   • In the Xcode Organizer, select Library->Provisioning Profiles.
   • Click Refresh at right-bottom corner.
   • Provisioning Profiles will be downloaded from Apple Developer Center.
3. In new mac,
   • In the Xcode Organizer, select your team in the Teams section.
   • Click Import.
   • Select the developer profile exported from old mac.
   • Enter the password for the file, and click Open.
4. Now you can develop app in your new mac with the developer profile and don't need create a new developer profile.