Gallium and germanium are silvery-white metals that can be found in a wide variety of electronics, such as semiconductors, smartphones, pressure sensors, transistors and fibre optics, as well as solar panels, camera lenses and space systems. Invoking "national security interests," the Chinese Ministry of Commerce said on Monday that companies that intend to sell products containing the two targeted materials would need to first obtain an export licence. In practice, this means that if the central government refuses to issue the licence, the company will be outright banned from exporting. The government will treat the merchandise as a "dual-use" item,...