Nowadays, producer services are increasingly becoming one of the most active areas of the economy.

目前，生产者服务业正日益成为最活跃的经济领域之一。

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Alcoa is the world's leading producer and manager of primary aluminum, fabricated aluminum and alumina facilities, and is active in all major aspects of the industry.

美铝公司是世界领先的氧化铝、电解铝和铝加工产品的生产商，活跃于铝工业的所有主要领域。

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Following Hanna's death in 2001, Joseph Barbera remained active as an executive producer for Warner Brothers Animation on TV series such as What's New, Scooby-Doo? and Tom and Jerry Tales.

BBC: NEWS | Entertainment | Cartoon legend Barbera dies at 95

The company distinguishes itself from its producer peer group through its active involvement in the development of the gold market, particularly in Asia.

FORBES: 7 Gold Stocks To Buy And Trade

Founded in 1989, Chesapeake Energy has grown to become the second largest producer of natural gas and one of the most active drillers of new wells in the U.S. Chesapeake competes with other oil and gas producers like Exxon, ConocoPhillips, Anadarko, BP and Chevron.

FORBES: Chesapeake CNOOC Deal Is Fracking Great But Stock Still Too Gassy