According to the information you may need refer to the following:
| General information | info@exten.ch |
| Commercial info. | uri.rom@exten.ch |
| Technical info. | z.pearl@exten.ch |
| Address: | Zona Industrie 3, CH-6850 Mendrisio |
| Phone: | +41 91 640 00 50 |
| Fax: | +41 91 640 00 55 |
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