The cavernous packaging floor at Tony Zhang's flagship Nanhui farm, 40 miles west of his Shanghai headquarters, looks like a set from Barbarella-all plexiglass and stainless steel. Workers wear coveralls, gloves, and hairnets as they spray piles of fresh-picked produce with water from hoses that hang from the ceiling. Other employees in matching jumpsuits hand-dry the fruits and vegetables and place them in bags that bear the motto "Organic Starts From Tony's Farm." Across the room, in a glassed-in laboratory, goggled scientists test samples of each crop for bacteria and chemical residues.
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