Longman Dictionary of Contemporary English
trade surplus
noun
EXAMPLES FROM CORPUS
▪ In fact, our trade surplus in Scotch is three times greater than our trade surplus in oil.
▪ Such distortions lead to a persistent trade surplus and a persistently rising yen.
▪ The trade surplus is more than $ 65 billion.
▪ Under the Conservatives, Britain has moved from manufacturing trade surplus to manufacturing trade deficit.
Wiktionary
trade surplus
n. (context economics English) A positive balance of trade.