In this March 4, 2011 photo, workers from the Dahon, the world's largest maker of folding bicycles, weld the bicycle frames in Shenzhen, a city of southern China. When several million migrant workers ... more 
In this March 4, 2011 photo, workers from the Dahon, the world's largest maker of folding bicycles, weld the bicycle frames in Shenzhen, a city of southern China. When several million migrant workers didn't come back to their southern China factory jobs after Lunar New Year, a turning point was reached for many of the foreign manufacturers scraping by with tiny profit margins. Dahon thinks moving inland will help regain the low cost advantage they once had in southern China. less 
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Associated Press | Photo By Kin Cheung
Tue, Apr 5, 2011 8:40 AM EDT