In fact, it all depends on your personality and comprehensive strength.
If you sell medicine, as long as you are soft-hearted, you will be measured around doctors, department heads and pharmacies every day.
Equipment sales are generally large in scale, just a lot of things, so basically they have to deal with the middle and upper levels of hospitals, such as equipment section chief and dean level. This requires resources!
I suggest you go to my Baidu space to see the specific details. I can't just say a few words here for the time being.