Apple Inc. has asked its largest suppliers to consider the costs of shifting 15 percent to 30 percent of their output from China to Southeast Asia, in a dramatic shakeup of its production chain, the Nikkei reported.

The U.S. tech giant asked “major suppliers” to evaluate the feasibility of such a migration, the newspaper cited multiple sources as saying. Those included iPhone assemblers Foxconn Technology Group, Pegatron Corp., and Wistron Corp.; MacBook maker Quanta Computer Inc.; iPad maker Compal Electronics Inc.; and AirPod makers Inventec Corp., Luxshare-ICT, and GoerTek Inc., Nikkei cited them as saying.

China is a crucial cog in Apple's business—the origin of most of its iPhones and iPads, as well as its largest international market. But President Donald Trump has threatened Beijing with new tariffs on about $300 billion worth of Chinese goods, an act that would escalate tensions while levying a punitive tax on Apple's most profitable product. Company spokeswoman Wei Gu didn't respond to a request for comment.