Wilier Triestina is an Italian manufacturer of
racing bicycles, founded in 1906 by Pietro Dal Molin in Bassano del Grappa, Italy.

They are now based in Rossano Veneto, Italy.
The company name originated as an acronym for the phrase “W l’Italia liberata e redenta”, where the W is an abbreviation for "Viva!" (Long live Italy, liberated and redeemed)

According to Wilier Triestina's US company website, the proper pronunciation of their name is
/Vee’-lee-air Tree-es-tee’-na/. World Champion Alessandro Ballan and runner up Damiano Cunego rode Wilier bicycles to victory in the
2008 UCI Road World Championships.

Article taken from Wikipedia