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? Yida is America Wrigley Company in 1984 to launch the first sugar free chewing gum, and become the first brand of global sugar free chewing gum in a short span of five years. In China, Wrigley Company is from the beginning of 1996 in the Guangdong pioneered the "extra" sugar free chewing gum. Now, the "extra" sugar free chewing gum sales network has covered mor..