... a company that makes (similar) PW like these ...
The MCE company might simply be distributors of items made elsewhere, but with designs according to their orders. Or they might have their own engravers, working on blanks from elswhere. Given that they provide corporate Pens, Leather goods and Pewter items as well as engraved crystal, I think it is unlikely that they actually make the full products.
But it is good to know about the source of corporate items, as usually when such things get into the secondary market, nobody has a clue where they came from.
[I think maybe "MCE" have been mentioned in the Board before - but I could not find any entries via a search.]