1, HR division has a wider employment scope, but generally requires a bachelor's degree, preferably majoring in human resource management, otherwise it must have industry experience.

2. Trainers belong to one of the subdivisions of human resources, and their employment is narrower than that of human resources. But the salary is higher. Generally speaking, it is required to be able to teach on stage, and it is best to understand training management. As for whether there is this certificate, that is the second.