a company of scientists based in the science and technology park of tehran university has succeeded in producing the insulin pen needed by this group of patients. the function of these pens is to act like a multi-use syringe for a disease, and the patient can inject himself with a set amount of medicine much more easily than a simple syringe. the use of this pen is not only for diabetic patients. at however, different colors can be produced for different types of drugs, as well as for growth hormones for children and teenagers , as well as infertility drugs, etc. a pen is produced in three parts, and the drug part is produced by darosa, its technical complexity in this part of this pen, which you see like a magic pen, it is actually 16 pieces, and it has parts of different types of engineering polymers and different composites, and they all work together like a boxing grip, with a very high accuracy of microliters can be used provide it for the patient and it has extremely strict tests that the pen must be able to deliver the function in different conditions, the right dose, easy injec