Staff work on the assembly line of Wosen Lighting Technology, a supplier to US e-commerce juggernaut Amazon, in the southern Chinese city of Zhongshan in Guangdong. The province has long been China's biggest manufacturing hub, but Trump's trade war now threatens to upend that -- adding to China's already grim economic outlook. "This situation won't be able to last long, because after all, it has very real impact on all countries, especially the American people," says Andy Lin, a business development manager for Wosen. IMAGES AND SOUNDBITES