China Petroleum & Chemical Corp, Asia's biggest refiner, is marketing a sale of dollar-denominated bonds in four maturities to fund overseas investment and repay bank debt. Sinopec, as the company is known, plans to sell three-, five-, 10- and 30-year bonds as soon as Thursday, said a person familiar with the matter, who asked not to be identified because the terms aren't set.

Chinese companies are looking abroad for oil and gas assets to feed the energy needs of the world's second-biggest economy.