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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringUlisbachEruMa AG
EruMa AG Logo
Verified· 2 sourcesTrust Score
Summary

About the company

EruMa AG provides technical consulting and trading services with a focus on electrical engineering and components for civil aviation. Services include spare-part procurement, support for vocational training in automation, troubleshooting of electrical components, and coordination of ISO management system implementation.

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Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered5
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4.1/5

EruMa AG

Technical consulting
Technical consulting and trading services, in particular support in electrical engineering and components for civil aviation.
SME administration support
Support in establishing SME administration in the areas of order processing, finance and HR.
Industry-specific support
Procurement of spare parts, support for apprenticeship training in the field of automation, the vocational trainer course, examination expertise and machine troubleshooting.
Introduction of an ISO management system
Coordination for the implementation of an ISO-certified management system as well as support with the specialist approvals for refrigerants and Gift C.
Aviation maintenance and troubleshooting
Support for maintenance organisations, in particular components inspector licence S and troubleshooting in the area of electrical components.
Trust & reputation

ranQ Trust Score of EruMa AG: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 54% · As of October 2026

Without public customer reviews the score stays capped.

EruMa AG has no value in the Reputation area of the ranQ Trust Score because no data is available. The area carries 42% of the weighting and drops out of the calculation for this profile; it does not lower the score, only the reported data basis.
x
CriterionValueWeight
  • Review quality: No data point — the criterion is taken out of the weighting and does not lower the score.—24%
  • Review volume: No data point — the criterion is taken out of the weighting and does not lower the score.—10%
  • Review recency: No data point — the criterion is taken out of the weighting and does not lower the score.—8%
EruMa AG scores 82.3 out of 100 points in the Substance area of the ranQ Trust Score. This area carries 28% of the weighting.
x
CriterionValueWeight
  • Establishment: Years since founding or brand launch, logarithmic. The maximum is reached at 15 years.92.512%
  • Company size: The headcount band, researched by ranQ or stated by the company. It is scored in steps rather than by head count, because the data only provides bands.55.07%
EruMa AG scores 83.3 out of 100 points in the Identity area of the ranQ Trust Score. This area carries 22% of the weighting.
x
CriterionValueWeight
  • Verification: Official register entry (commercial register with UID or professional-body record, 55 points), confirmed domain (20 points) and confirmed ranQ profile (up to 25 points, depending on completeness).83.322%
EruMa AG scores 2.6 out of 100 points in the Visibility area of the ranQ Trust Score. This area carries 8% of the weighting.
x
CriterionValueWeight
  • Website authority: Ahrefs' Domain Rating measures, on a scale of 0 to 100, how strongly a website is linked from other websites. For Swiss SMEs the range up to 40 is typical; the maximum is reached at 35.2.64%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

EruMa AG reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». No public customer reviews are available for this provider; the rating is based on the remaining criteria. The data basis is 54%, so the score is backed by part of the criteria. As of October 2026.

The Trust Score cannot be bought and is calculated from publicly verifiable data.

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Location

Bärenfelsstrasse 2
9631 Ulisbach

At a glance

Legal form
Corporation
UID
CHE-285.235.104
Founded
2014 · 12 years
Last commercial register change
February 28, 2014
Employees
1 to 10
Legal form: Graded by liability and disclosure. The weight is kept small: a sole proprietorship is not a dubious company, it is just liable differently.
100.0
6%
  • Branch offices: Branch offices linked in the commercial register. Having none is normal and costs no points.70.03%
    • Full methodology

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