1. Get the recommendation letter from the subsidiary. This usually requires communication with your immediate supervisor and human resources department to confirm whether your qualifications meet the requirements of the parent company.
2. Confirm whether you have any suitable vacancies in your parent company. If yes, you need to provide detailed job description and requirements to the parent company to determine whether you meet the requirements of the position.
If you meet the requirements, you need to fill out and submit a job application form, including your resume and other relevant information, for the parent company to evaluate.
After completing the application procedure, you need to attend an interview to further prove your ability and qualification. If your interview performance is recognized by your parent company, they may give you a job opportunity.
After accepting the job opportunity, it is necessary to sign a new labor contract with the parent company. This may require some legal procedures, such as dissolving your existing contract in the subsidiary, or reaching an agreement with the subsidiary to transfer your labor relations to the parent company.
Please note that the specific procedures may vary from company to company and industry. Therefore, it is best to consult your company's human resources department or legal adviser before changing jobs to ensure that you understand all the necessary steps and procedures.