How to open an STL format file with CATIA?? Mở file định dạng .stl trong CATIA thế nào?

First you need an RE2 license. Then go to the "Digitized Shape Editor" environment, then Insert -> Import. Sufrace creation can be made in "Quick Surface Reconstruction" environment.

Via: https://grabcad.com/questions/how-to-open-an-stl-format-file-with-catia