by LITIO Sheet metal for AutoCAD. It calculates flat (unfolded) sheet development of ducts, rectangle to ound transitions, cylinders, cones, intersections, connections, bifurcations, elbows, etc. For HVAC, hoppers, cyclones, ducts, silos, piping, etc.
by BBAD Inc. Best Reader (Spanish version), the software for mastering speed reading in two weeks. After 15 one-hour studies with the Best Reader you will increase your reading speed up to 10 times, improve your reading comprehension and develop your memory.