Open this photo in gallery: People look at newly launched smartphones at a Huawei flagship store after the company unveiled new products on Sept. 25, in Beijing.Kevin Frayer/Getty Images Huawei Technologies on Monday showcased a series of new products from a gold smartwatch to a smart car but disappointed viewers by not revealing more details about its new Mate 60 smartphone series, prompting an outpouring of complaints online. The event, held in a stadium and watched by millions online, was expected to see Huawei break its silence on the smartphone, which has been hailed by Chinese state media as a…