Complex sentence: Since 1980, there has been a worldwide increase in the use of AAC materials and new production plants are being built in the USA, Eastern Europe, Israel, China, Bahrain, India and Australia.
Split into simpler sentences: Since 1980, there has been a worldwide increase in the use of AAC materials. New production plants are being built in the USA, Eastern Europe, Israel, China, Bahrain, India, and Australia.