The mood in markets soured after the US Senate angered China by passing a bill requiring annual certification of Hong Kong's autonomy and warning Beijing against suppressing protesters
WTO appeals judges said in July that the United States did not fully comply with a WTO ruling and could face Chinese sanctions if it does not remove certain tariffs that break the watchdog's rules
Many experts also decry China's decision to fight fire with fire, by imposing tariffs on US goods imported into China, also without the WTO's approval
China's overall exports and imports both grew at a strong double-digit clip early in the year