How is the process of qualifying companies going against quality requirements?

How is the process of qualifying companies going against quality requirements?
The process of qualifying companies and various entities, to obtain certificates against the requirements of quality systems and ISO specifications, passes through several stages, which we summarize in preparation (analysis, initial evaluation and training), creation and application (preparation of documents, application and internal auditing) and obtaining the certificate (final audit by an industrial services audit institution and maintaining system after its creation). The below-mentioned figure shows the essence of these stages.