The trade war between the world's two biggest economies shows no signs of slowing down - Beijing has vowed to "fight to the end" hours after US President Donald Trump threatened to nearly double the tariffs on China. That could leave most Chinese imports facing a staggering 104% tax - a sharp escalation between the two sides. Smartphones, computers, lithium-ion batteries, toys and video game consoles make up the bulk of Chinese exports to the US. But there are so many other things, from screws to boilers.With a deadline looming in Washington as Trump threatens to introduce the additional tariffs...