Apple experience a $200 billion market cap drop amid investor concerns about China.
A new phone from Huawei has been built mostly with equipment from China.
Apple generated almost a fifth of its $394.3 billion net sales from the region in its last fiscal year .
This week, Apple's main competition in China, Huawei launched a new 5G smartphone, the Mate 60 Pro.
Other tech companies may be next.
Persons:
Tim Cook, Cook, Joe Biden
Organizations:
Apple, Huawei, Service, Xiaomi, China's Semiconductor Manufacturing International Corporation, Bloomberg, Jefferies
Locations:
China, Wall, Silicon, Taiwan, Washington, Beijing, Guangzhou