History/Timeline History/Timeline History/Timeline 美國鋁業（Alcoa） History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline According to the timeline History/Timeline Alcoa History/Timeline History/Timeline History/Timeline History/Timeline "Alcoa -- Our History" History/Timeline Aluminum Company of America History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline History/Timeline