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.
Balance of Trade, from AmosWEB's Economics Gloss*arama. BALANCE OF TRADE: The difference between the value of goods and services exported out of a country and the value of goods and services imported into the country. The balance of trade is the official term for net exports that makes up the balance of payments.