Inside Apple's Factories in China

"Nightline" anchor Bill Weir was granted unprecedented access to Foxconn, one of the Chinese companies Apple uses to manufacture their products. A Foxconn workers files down the iconic Apple logo a the company's iPad production plant in Chengdu, China. Workers say they can each process up to 6,000 units per day. Watch a special edition of "Nightline," TUESDAY, Feb. 21 at 11:35 p.m. ET/PT. (Almin Karamehmedovic/ABC News)