The current record-holder for melting point is tantalum hafnium carbide (Ta4HfC5), a refractory compound with a melting point of 4215 Â°C In other words, you could not heat a rock that high because there's not a furnace or a crucible on earth that could hold it.
DEFINITION of 'Trade Surplus'. An economic measure of a positive balance of trade, where a country's exports exceeds its imports. A trade surplus represents a net inflow of domestic currency from foreign markets, and is the opposite of a trade deficit, which would represent a net outflow. Next Up.
The U.S. had a trade surplus with NAFTA countries of $28.3 billion for services in 2009 and a trade deficit of $94.6 billion (36.4% annual increase) for goods in 2010. This trade deficit accounted for 26.8 percent of all U.S. goods trade deficit.