According to a new law voted in 2016 and which came into effect starting June 1, 2017, foreign companies activating in China could be forced to provide access to their source code to a state agency that has been recently linked to China’s nation-state cyber-espionage campaigns. […]

from https://www.bleepingcomputer.com/news/government/chinese-agency-linked-to-cyber-espionage-operations-will-review-source-code-of-foreign-firms/