The 175g UltiPro Ultimate disc and the 135g UltiPro Junior Ultimate disc made by YiKun Sports have been PDGA Approved as of 12-16-2013.
"The brand new 175G UltiPro Ultimate disc has gained wide popularity among the ultimate community in China with the development of forty generations. It is aerodynamically shaped with refined rim and shoulder. It flies further and more consistently. The adhesive inner surface and improved material blends offer players a better grip when doing any throws. The 135G UltiPro Junior Ultimate disc is specially designed for younger ultimate players who are under 14. It is smaller, lighter and more flexible than standard ultimate discs, which makes it easier for young players to throw and catch." - by YiKunSports