Wingtech Technology is taking flight. The once little-known Chinese designer of low-end smartphones has become a major contractor for Apple and aspiring semiconductor producer — and the subject of international controversy over its acquisition of U.K.-based chipmaker Newport Wafer Fab. For Wingtech, that deal is just one of several savvy investments that it’s made in the last five years, as the company seeks to muscle its way into China’s burgeoning chips industry. This week, The Wi