Apple Inc. Chief Executive Officer Tim Cook is visiting China for at least the third time this year, showing up at a suppliers' conference on the same day a top Beijing official convened an important meeting with a group of foreign CEOs.

Chinese Premier Li Qiang is expected to meet with top corporate executives on Monday ahead of the event, just as companies worldwide are bracing for President-elect Donald Trump's threat to hike tariffs on Chinese goods. Disruptions to trade are a source of concern especially for Apple, which makes the majority of its iPhones through Foxconn in the country and counts China its biggest market after the US.