The thing is though, the unit members are also still your employees with access to internal information. Since they serve two masters, the company can be tempted to elevate their status internally to improve how they represent the CCP on the other side. And the opposite can happen - employees can be hired with high CCP ranks so that when they join the unit their influence for the company will be stronger.
"One senior executive whose company was represented at the meeting told Reuters some companies were under “political pressure” to revise the terms of their joint ventures with state-owned partners to allow the party final say over business operations and investment decisions."
Information on how this actually works is scarce since relative to the US there is much weaker rule of law/discovery, and fewer independent journalists, considering how tightly China controls and polices which journalists are allowed in and what they write about.
"Companies in China, including foreign firms, are required by law to establish a party organization, a rule that had long been regarded by many executives as more symbolic than anything to worry about."
https://www.reuters.com/article/us-china-congress-companies-...