Yum Brands is putting its A&W and Long John Silver's chains on the market.The Fortune 500 company purchased the two chains in 2002, and is now looking for buyers. Yum officials did not return requests for comments, but in a press release, company officials said the sale is necessary as Yum focuses on expanding its KFC, Pizza Hut and Taco Bell chains domestically and internationally, specifically in China.Most of Yum's profits come from abroad, and the company hopes to make 75% of its profits in China by 2015.Officials say the sale of Long John Silver's and A&W is not expected to hurt profits. Yum owns more than 37 thousand restaurants worldwide. The two chains account for just over 16 thousand of those.