In a recent survey by the American Chamber of Commerce in Shanghai, less than half of respondents said they were optimistic about the prospects for their business in China over the next five years—a record low.

Read More The Economist: Tough times for U.S. firms in China

"A law required that these devices be fitted with filters to ensure safe internet use, but educational technology companies — GoGuardian, Gaggle, Lightspeed, Bark and Securly are the big ones — also saw a way to address rising rates of suicidal behavior and self-harm."

Read More School-issued Chromebooks scan for suicidal ideation