The daily work of an insurance adjuster is to "accept the entrustment of the parties (insurance companies or customers) and engage in the evaluation, inspection, appraisal and adjustment of the subject matter of insurance."

The requirement is to pass the "insurance adjuster" exam and get the insurance adjuster certificate. If you work in an insurance assessment company, you need to apply for the relevant employment certificate. Of course, having relevant professional ability is the real requirement.

Further reading: How to buy insurance, which is good, and teach you how to avoid these "pits" of insurance.