Dear Cristina I must say that you are a valuable support for me in my developments. You know how to correct my mistakes and find solutions and that is why I have always used the services of your company for years. For the manufacture of these last prototypes, even if they are all functional, I still have to make a few corrections before launching the mass production of 60 or 70 pieces. For example, I have to review the 5V regulator part. and I will ask you to redo a small series of bare PCBs that I will assemble myself, I have all the components here. Thank you for the seriousness of your work. I hope that my "google english" will translate my evaluation properly. Best regards Lucien