Tiscali Selects Sigma Systems Service Management Platform for Mobile Service Provisioning MILAN, ITALY--(Marketwire - Jan 9, 2013) - Sigma Systems, the authority in provisioning converged broadband solutions, today announced that Tiscali, one of the leading independent telecommunication...

Sigma Corporation's New APO 50-500mm F4.5-6.3 DG OS HSM Now on Shelves RONKONKOMA, NY--(Marketwire - March 19, 2010) -  Sigma Corporation (www.sigmaphoto.com), a leading researcher, developer, manufacturer and service provider of some of the world's most impressive...

Sigma Corporation of America Launches New, Interactive Community Web Site RONKONKOMA, NY--(Marketwire - February 24, 2010) - Sigma Corporation (www.sigmaphoto.com), a leading researcher, developer, manufacturer and service provider of some of the world's most impressive...