Li Ning shoes are on display

Sportswear firm Li Ning warned it will post a substantial 2012 loss as it racks up as much as $288 million in expenses under a plan to buy back inventory from distributors, one of the thorniest problems facing retailers in China.

China's economic slowdown has resulted in inflated stock levels and depressed earnings for retailers including local and foreign sportswear players -- a sharp reversal of fortune after an expansion blitz that followed the 2008 Beijing Olympics.