It's called an OEM (Original Equipment Manufacturer) license, they're quite common.
Half the CD-ROM/RW companies in the world don't actually make their drives, they just license them from companies like Plextor or Mitsumi and put their brand name on them. Only three or four monitor companies actually manufacture their own CRT tubes, most of them get them from SONY, Viewsonic, and the like. There's nothing wrong with it, and it's standard business.
