Telephone
Fax
Sigmaplan AG
3006 Bern
SIGMAsoft AG
8820 Wädenswil
Sigma AG
9470 Buchs SG
Sigmatic AG
6210 Sursee
Sigmaform (Schweiz) AG
6330 Cham
Personal Sigma Basel AG
4053 Basel
SIGMATEK Schweiz AG
8308 Illnau
Personal Sigma Olten AG
4600 Olten
SIGMAL Kommunikation + Training AG
7000 Chur
Personal Sigma Aarau AG
5000 Aarau
Personal Sigma Sursee AG
Six Sigma Tools AG
6340 Baar
Sigma Lotus AG
8808 Pfäffikon SZ
9443 Widnau
Personal Sigma Schwyz AG
6430 Schwyz
