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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryRetail & CommerceRetail - Machinery & Technical EquipmentGüttingenKoster GmbH
Koster GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Koster GmbH is the manufacture and servicing of paint spray booths and coating booths for various industries, including automotive, carpentry, vehicle construction, rail vehicles and industry. This includes service work, conversions, renovations, dismantling and the manufacture of new installations of complex paint spray and coating booths.

AI-generated
Offering

Products & services

Industry:Retail - Machinery & Technical Equipment
✓ Offered5
New systems for spray and paint booths
Test spray booths, colour spray walls, PW and LKW paint booths as well as industrial systems with overhead conveyor, curing ovens and curtain systems—all from a single source.
Service and emergency call-outs
Planned service visits, spare parts and consumables, troubleshooting for fans, motors and V-belts, on-site cleaning, balancing work and fire-damage remediation.
Conversions and renewals of paint booths
Relocations of paint booths, WRG retrofit, replacement of burners, ovens, units and control consoles, lift inserts, dismantling and overhauls.
Workshop heating systems
Hall heating systems, heating, ventilation and drying installations, warm-air generators, air-supply and ventilation systems, air curtains at doors, compact systems and sound-insulation concepts.
Powder coating systems
Consulting, delivery, installation and commissioning of powder plants, manual and automatic spray systems, manual booths, curing ovens, conveyor systems and recovery systems.
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3.9/5

Koster GmbH

Trust & reputation

ranQ Trust Score of Koster GmbH: 3.9 out of 5.0

Trust Score3.9/ 5.0

High

x

Data basis 96% · As of October 2026

Koster GmbH scores 53.8 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.35.08%
Koster GmbH scores 83.0 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.55.07%
Koster GmbH 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%
Koster GmbH scores 0.9 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 35.0.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Koster GmbH reaches a ranQ Trust Score of 3.9 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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Location

Sommeristrasse 16
8594 Güttingen
Opening hours
Mon
07:00 - 19:00
Tue
07:00 - 19:00
Wed
07:00 - 19:00
Thu
07:00 - 19:00
Fri
07:00 - 19:00
Sat
08:00 - 14:00
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-402.650.837
Founded
2011 · 15 years
Last commercial register change
March 3, 2022
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.
88.0
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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