efmain32.dll is a EFMAIN32
belonging to Machine Translation Systems of PROject MT company
from PROject MT, Ltd.
Non-system processes like efmain32.dll originate from software you installed on your system. Since most applications store data in your system's registry, it is likely that your registry has suffered fragmentation and accumulated invalid entries which can affect your PC's performance. It is recommended that you check your registry to identify slowdown issues.