Will the unit that goes abroad to apply for a visa but still applies for a passport visa at work know?

Usually no one cares about your passport.

The visa depends on which country you apply for. If you apply to Thailand and other countries that do not need to provide employment and electricity transfer certificates, your company must know. On the contrary, if you are applying to Europe, Australia and other countries that need to provide employment and electricity transfer certificates, your company must know.

Unless you provide false information, it is easy to refuse a visa, and it is difficult to apply for a visa again next time.