Contact
| France | Belgique |
| NDT France Alva s.a. | S.A. Croix Chatelain N.V. |
| ZA Les Marquisats | Vilvoordsesteenweg 146 |
| F-74550 Orcier | B-1120 Brussel |
| alvasa@wanadoo.fr | info@croixchatelain.com |
| tel.: +33 (0)4 - 50738787 |
tel.: +32 (0)2 - 2680045 |
| fax: +33 (0)4 – 50738747 | fax: +32 (0)2 – 2680766 |
