Crazy Factory (very poor, not sure if it's even worth checking)
Beauty Factory (extremely poor, definitely not worth checking)
E-something? Can't recall the name, a very old Windows game where you had a factory hall and put there machines and hire all sort of workers, focuses on engineering part more than business part (quite decent)
Capitalism 1 & 2 & Lux, not exactly a factory sim, but worth checking (undoubtly the best game of the production/corporation sim genre).
Also, if you are into browser games there are several quite good ones (but these focuses more on managing a whole company or even conglomerate of companies than a factory).
I believe that mentioned game is "Free Enterprise"