GAP Engineering SA Ingenieurbüros Route de Chippis 71 3966 Chalais Kanton: Wallis CH www.gap-engineering.ch (027) 455 57 14
Techni Concepts Sàrl Fenster Ingenieurbüros Route de Chippis 92a 1967 Bramois CH www.techniconcepts.ch (079) 202 03 30
