what is the economic meaning of intra industry trade?

Answer 1

Intra== meaning inside, intra industry trade is the trade between inside the industry. Let take Telecom for example, Verizon is the phone service provider, Lucent technology is a gear maker. So lucent technology make gears for verizon in turn verizon may let lucent access marketing information of verizon's customers for adverstising

Answer 2

i think its the trade of the industrial indecies for each day or the trade of individual industrial stocks.