References
Our customers worldwide
Numerous international operators have entrusted Halys with the design of new, easy-to-manage services, providing an ideal response to their customers' needs.
- Halys
- 28, rue Rosenwald
- 75015 Paris
- France
- Tel. : +33(0)1 40 43 21 25
- Fax : +33(0)1 45 32 06 14