China’s regulators are writing new rules to prevent its data-centric tech firms from going public in the U.S., according to the Wall Street Journal.

From the WSJ:

In recent weeks, officials from China’s stock regulator have told some companies and international investors that the new rules would prohibit internet firms holding a swath of user-related data from listing abroad, the people said. The regulators said that the rules target companies seeking foreign initial public offerings via units incorporated outside the country, according to the people.

China Securities Regulatory Commission officials said that companies with less sensitive data, such as those in the pharmaceutical industry, are still likely to receive Chinese regulatory approval for foreign listings, according to the people.

The new rules are likely to help Beijing exert more control over the complex corporate structure that China’s biggest tech companies use to sidestep restrictions on foreign investment. Chinese leaders consider sectors such as the internet, telecommunications and education sensitive because of political or national-security concerns.