Willy Bonvin Électricité SA✓ Verified
Sitten, Switzerland
Electrical / ElectricianInstallerWebsite
H55✓ Verified
Sitten, Switzerland
Engineering / ContractorEPC
Developing certified electric propulsion systems for the aviation industry which are clean, quiet, safe and affordable See more
- Website
- h55.ch
- Phone
- —
- —
- Industry
- Engineering / Contractor
- Location
- Sitten, Switzerland
- Verification
- ✓ Verified — website confirmed live on 6/16/2026
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