1. Promoting internal quality improvement of suppliers can promote the establishment of a comprehensive quality assurance team for suppliers;

2. Confirm and control supplier process and material changes;

3. Promote suppliers to import commonly used quality tools for quality testing;

4. Conduct risk assessments of suppliers and respond to changes in a timely manner when managing them;

5. Conduct regular and rigorous supply audits when managing suppliers;

6. Establish a comprehensive and standardized material incoming inspection procedure for suppliers.