Cockroaches have flat, oval-shaped bodies. The bodies of cockroaches are oily to the touch and may be cool or warm, depending on the temperature of their environment. The head of a cockroach is small and is covered by a shield-like pronotum.
World Trade Organization. Today, member countries number 125 (nearly the whole world except China, some former communist countries, and a number of small nations) and WTO rules apply to over 90 percent of international trade.
China is a member of the WTO and is the world's largest trading power, with a total international trade value of US$3.87 trillion in 2012. Its foreign exchange reserves reached US$2.85 trillion by the end of 2010, an increase of 18.7% over the previous year, making its reserves by far the world's largest.