Does the Party Committee of the branch have the right to refuse the appointment of the general manager of the branch by the superior?

No, the appointment and removal of the general manager of the subsidiary should be decided by the board of directors of the head office, and the party Committee of the branch office does not have this right. The party committee system is also called the "collective leadership system of the party", and all members of the committees at all levels of the Chinese production party decide major issues through meetings.