No, they aren't. Working for a government owned company is not working for the government. They can have no affiliation with the CCP (which isn't possible if you work for a government department).

What distinction do you make between the Chinese government and the CCP? Aren't they pretty much the same thing?

They are the same thing. Government owned companies are not "part of the government" like government departments are. The CEO's and directors are probably all members of the party, but labelling every employee as a party member running the party agenda is false.

There are even 'members' (large numbers) of the party who do not agree/encourage the party agenda.