How do pharmaceutical OTC and big health enterprises choose brand marketing consulting companies?

Look at the enterprise history, whether there is an industry history of 10 years or more; No matter whether the enterprise focuses on marketing or brand consulting, some enterprises don't know what they are doing every day and have been following suit. There was a time when numbers, brands and training were the same. Such a consulting company can't be found, and it is definitely unprofessional; The ability of the project director, no matter how big the company is, can't put all the work on a few humanitarians, so the project leader is the key. Is it possible to grow up with the enterprise and change jobs frequently? Whether you have relevant experience of 10 years or more; Whether you have relevant industry experience; Whether there is experience in other industries (marketing is interlinked and other industries can learn from it). I know Qi Zhi, which was founded 9 years ago. It has a special medical and health department and many successful cases. It is suggested that you can make a field trip. The cases on their website are relatively complete.