Dear Sirs,
I introduce myself as a mechanical engineer with diverse experience in product development, as you can see in my profile portfolio.
In the text they refer to an autocad document, which was not attached, if they can upload it to view it, I will be able to give an opinion more in line with what they need.
if i am of your interest we will gladly retain the details, objectives, time and value of the project, to adjust my offer to a mutually agreeable point.
Thank you for reading my offer.