Excellent..

a very very good lecture was that

Nice and lovely lectures

Thank you for the information provided

The course and the explanation are very interesting.

Each and every topic covered in this course was excellent. Nice and excellent course.

nice examples of coupling

It’s quite detailed lessons.

I am very happy to have learned the basic notions about optical connectors, this allowed me to understand the operating principle and finally reconcile theory and practice without ambiguity, thank you also for the certificate however I suggest you scan (enter) the course support for greater readability, thank you