To put it simply, a class of medical devices means that they will not pose a threat or harm to people after routine management, a class of medical devices means that they will not pose a threat or harm to others after professional management by professional technicians, and a class of medical devices means that they are implanted into human bodies (such as infusion tubes).
Medical device business license is not easy to handle. First of all, you must have a quality management or inspection personnel (bachelor degree or above, not the same person as the legal person). Secondly, the business area is more than 30 square meters, and the warehouse area is more than 50 square meters (biochemical reagents also require cold storage).
In short, this is it. I hope I can help you.