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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryBusiness & Technical ServicesRepair of Machinery & Electronic DevicesCollombeyEMGA - Martin Donnet
EMGA - Martin Donnet Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Emga is to provide solutions and services in the fields of air compression, energy, hydraulics and mechanics. This includes, among other things: the sale and rental of air compressors, generators, lighting systems, energy storage systems and fuel tanks; the provision of maintenance and repair services for these devices; the sale of fluids, lubricants and spare parts; the provision of consulting services for energy efficiency and optimization; and the installation and maintenance of barriers and other safety systems. The company thus offers a wide range of products and services tailored to the needs of companies and organizations in various industries.

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Offering

Products & services

Industry:Repair of Machinery & Electronic DevicesMechanical Engineering Industry
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EMGA - Martin Donnet

✓ Offered11
Compressed air and energy
Complete solutions for compressed air and energy for construction sites and industry, with compressors, generator sets, energy storage systems, lighting and tools.
Industrial hydraulics
Custom solutions in industrial hydraulics and high-pressure, with hydraulic power units, standard and custom cylinders, hydraulic components and the ParkerStore store.
Mechanics, maintenance and machining
Maintenance, mechanical work, assembly and disassembly of installations, overhaul of machines and pumps, repairs, machining, welding and the fabrication of custom parts.
Preventive service
Preventive maintenance for construction-site and industrial machines, with checks, servicing and interventions to reduce breakdowns, downtime and costs.
Troubleshooting and repairs
Troubleshooting and repairs for construction-site and industrial machines in Romandy, with rapid diagnostics, restart and on-site intervention.
Service contract
Comprehensive service contracts for maintaining construction-site and industrial machines, in particular Atlas Copco, with maintenance monitoring and cost optimisation.
Energy improvement advice
Advice to improve compressed-air plants and generator sets, with energy optimisation of construction-site and industrial installations.
Fluids and lubricants
Atlas Copco fluids and lubricants, with oils for compressor and engine, cooling fluids and lubricants for pneumatic tools.
Spare parts and service kits
Atlas Copco spare parts and service kits, with assistance to identify references and order also for older machines.
Machine rental (Emga Rent)
Online rental of air compressors, generators, construction-site lighting, fuel tanks, clamping tools, electrical equipment and other machines.
Donbar barriers
Removable barriers to secure construction sites, roads and events, designed by Emga and easy to transport and install.
Trust & reputation

ranQ Trust Score of EMGA - Martin Donnet: 4.2 out of 5.0

Trust Score4.2/ 5.0

Very high

x

Data basis 96% · As of October 2026

EMGA - Martin Donnet scores 71.9 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.73.724%
  • 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.68.910%
  • 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%
EMGA - Martin Donnet scores 82.2 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.100.012%
  • 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.70.07%
EMGA - Martin Donnet 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%
EMGA - Martin Donnet scores 74.3 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 35.74.34%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

EMGA - Martin Donnet reaches a ranQ Trust Score of 4.2 out of 5.0 — rated «Very high». The rating draws, among other things, on 4.6 out of 5 stars from 14 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
4.6
of 5

Aggregated from 14 reviews across all connected sources

Sources
GGoogle4.614
★TrustpilotSoon
PProvenExpertSoon

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

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Location

Chemin de la Barme 17
1868 Collombey
Opening hours
Mon
07:00 - 12:00, 13:30 - 17:00
Tue
07:00 - 12:00, 13:30 - 17:00
Wed
07:00 - 12:00, 13:30 - 17:00
Thu
07:00 - 12:00, 13:30 - 17:00
Fri
07:00 - 12:00, 13:30 - 16:15
Sat
Closed
Sun
Closed

At a glance

Legal form
Sole proprietorship
UID
CHE-107.008.291
Founded
1990 · 36 years
Last commercial register change
March 9, 2026
Employees
11 to 20
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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