When Apple CEO Tim Cook visited China last week, he pledged to government officials that the company would continue to increase its investment in the country, where the vast majority of its products are made, according to the state-run Xinhua news agency. But Apple recently reached a new milestone in its manufacturing efforts in India, which could help it one day reduce its dependence on China.For the first time, Apple is using an Indian factory to do the early manufacturing work for the base mo...