1, regardless of whether it is formal or not, choose a big company if you want, and don't choose a small organization that a few people improvise. There is no guarantee.
2, working time, which shows whether it is professional.
3. Economic strength, this is the guarantee.
4. The teaching environment directly affects the learning effect.
5. Is there a professional team of teachers and R&D teams?
We can draw a conclusion from these aspects ~