Diaa Hadid Here in the southern state of Tamil Nadu, many seek work at one company: FoxConn, which manufactures iPhones for Apple. Women make up some 70% of the Sriperumbudur plant’s workforce. Twenty-one-year-old Keerthana, who only has one name, was sleepily waiting for a bus to the FoxConn dormitory housing women employees. She’d arrived in…