Overview -- Mexico-based cement producer CEMEX successfully executed its liability management and asset sales plan, which resulted in an extended debt maturity profile and additional liquidity. -- The company's operating performance remains on a positive trend and we expect profitability and cash flow generation to improve further in 2013. -- We are placing our ratings, including the 'B-' global scale and 'mxBB/mxB' national scale corporate credit ratings, on CEMEX on CreditWa