Qualcomm touts its advanced chips at the World Artificial Intelligence Conference in Shanghai. (Photo by Tomoko Wakasugi) SHUNSUKE TABETA and TOMOKO WAKASUGI, Nikkei staff writers September 2, 2022 01:51 JST | China Copy Copied SHANGHAI — Big U.S. tech companies have flocked to the World Artificial Intelligence Conference that opened Thursday in Shanghai, drawing a stark contrast with Washington's ongoing efforts to distance itself economically from China. The opening ceremony included a virtual address by Qualcomm CEO Cristiano Amon, who said the company will supply the most complete and comprehensive technology and solutions in China and the world. Apple, Advanced…