Home - Mikros Engineering Since 1963, Mikros has been supplying custom injection molding, insert molding, over-molding, tooling, assemblies, and prototypes to companies throughout the United States, South America, Europe, and Since 1963, Mikros has been supplying custom injection molding, insert molding, over-molding, tooling, assemblies, and prototypes to companies throughout the United States, South America, Europe, and Asia.