For years China's top officials have touted their ambitious policy priority to wean the world's second-largest economy off high levels of debt, but there is not much to show for it. SEE MORE Anglo-Australian resource major Rio Tinto, which focuses on traditional commodities like iron ore, has started to seek out new materials that will be more in demand in the next decades, the company's chief executive Jean-Sebastien Jacques told the Nikkei Asian Review. SEE MORE Corporate debt is at its highest level relative to U.S. GDP since the financial crisis , and while not now a concern, that mountain of corporate IOUs could quickly turn into a heap of worry under the right circumstances. SEE MORE As a coal importer, Vietnam will pay substantially more for energy source in coming years, according to recent analysis. SEE MORE Poor macroeconomics and oversupply in the near term will weaken the Asian polyethylene market. SEE MORE