It's a pretty common tactic. Cite "national security" or any other vaguely plausible reason to deny access to non-favored firms (foreign companies, and local companies who don't have the "connections"). If anyone complains, government spokesperson and 50 cent mafia generate lots of angry nationalistic crying. If another country retaliates, same spokesperson and 50 cent mafia will then decry with a straight face how hypocritical "democracies" are and how great Xi Jinping is.
The game plan is simple. Buy and/or steal tech. Rebadge as Chinese, then bankrupt the original creators by leveraging government subsidies and underpaid workers ie Segway.