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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,937 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesTechnical Consulting & EngineeringGrolleyMétal Grandjean
Métal Grandjean Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Métal Grandjean encompasses two main areas: 1. **Office services for industrial projects**: The company provides support in the conception, planning and implementation of industrial projects, including the creation of machines, individual parts or temporary solutions. 2. **Refabrication and restoration of vintage car parts**: Métal Grandjean offers services for the redevelopment, restoration and adaptation of parts for vintage vehicles, particularly when original parts are no longer available or of poor quality.

AI-generated
Offering

Products & services

Industry:Technical Consulting & Engineering
✓ Offered3
Industrial engineering office
Industrial engineering office for complete machines and individual parts, from concept to finished product: concept, design, 3D prototyping, calculations, drawings, manufacturing, assembly, tests, CE certification and patents.
Reproduction of oldtimer parts
Reproduction of oldtimer parts for classic cars: redrawing, restoration and adaptation of aesthetic and functional parts, in particular trim, plastics, cast components and supports.
Engineering office
Engineering office for technical projects: concept, design, 3D prototyping, calculations, technical drawings, manufacturing with a partner, assembly, tests, CE certification and intellectual property.
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3.8/5

Métal Grandjean

Trust & reputation

ranQ Trust Score of Métal Grandjean: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Métal Grandjean scores 60.4 out of 100 points in the Reputation area of the ranQ Trust Score. This area carries 42% of the weighting.
x
CriterionValueWeight
  • Review quality: The average rating across all connected sources, smoothed against the industry mean. So 5.0 stars from three reviews do not outrank 4.7 from three hundred.70.824%
  • Review volume: The number of reviews across all sources. The scale is logarithmic: the first reviews count the most, and the maximum is reached at 50 reviews.27.910%
  • Review recency: The age of the most recent review. Two-year-old reviews deliberately sit in the middle, because that is normal for Swiss SMEs. Only after three years without a new voice does the value drop markedly.70.08%
Métal Grandjean scores 69.6 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.79.212%
  • 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%
Métal Grandjean scores 85.0 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).85.022%
Métal Grandjean scores 0.3 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 35.0.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Métal Grandjean reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 5.0 out of 5 stars from 2 customer reviews. The data basis is 96%, 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.

Reviews

Aggregated rating

Aggregated rating
5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle52
★TrustpilotSoon
PProvenExpertSoon

Further sources are added continuously and factored into the ranQ Rating.

Knowledge

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Comparisons

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Location

En Genevrex 6
1772 Grolley
Opening hours
Mon
07:30 - 22:00
Tue
07:30 - 22:00
Wed
07:30 - 22:00
Thu
07:30 - 22:00
Fri
07:30 - 22:00
Sat
07:30 - 22:00
Sun
08:30 - 22:00

At a glance

Legal form
Sole proprietorship
UID
CHE-350.365.451
Founded
2018 · 8 years
Last commercial register change
January 14, 2025
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.
67.0
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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