Visitors are usually not allowed to use cameras in Huawei’s 5G exhibition hall in the southern Chinese city of Shenzhen. But Huawei recently opened the hall up to journalists covering the Chinese tech giant’s lawsuit against the US government. The exhibition details how Huawei has signed dozens of 5G contracts with carriers around the world, including LG Uplus in South Korea and Vodafone in Europe. It also illustrates what is at stake after the US banned American companies from doing…