From CATIA User Community.

CATIA Mechanical Surface Refinement  is an app providing essentials from ICEM portfolio commands to enable mechanical surfaces experts with more advanced options in case they need to secure both engineering constraint and visual aspect after the fact (in that order of priority).

Mechanical Surface Refinement is available as an add-on in CATIA V5, and in the role Mechanical Shape Refinement Designer on 3DEXPERIENCE (available on cloud or on premise).