What are the national vocational qualification certificates? Which is more useful now?

Nationwide exam occupations: enterprise human resource manager, psychological counselor, financial planner, project management division, enterprise information manager, secretary (national vocational qualification level II), network editor (national vocational qualification level II), salesman (national vocational qualification level II), vocational guidance personnel, labor security assistant, etc.

Occupations of provincial unified examination: secretary (national vocational qualification level 5, level 4 and level 3), marketer (national vocational qualification level 5, level 4 and level 3), customs declarer (national vocational qualification level 5, level 4 and level 3), network editor (national vocational qualification level 4 and level 3), logistics engineer, enterprise trainer, e-commerce engineer and public nutritionist.