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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,904 companies indexed · Last updated: today
DirectoryIndustryMechanical engineeringWetzikon ZhThomas Stiefel
Thomas Stiefel Logo
Verified· 2 sourcesTrust Score
Summary

About the company

Thomas Stiefel provides engineering and plant-construction services for the thermal recovery of waste and biomass, delivering solutions based on grate and rotary-kiln furnaces and supplying associated plant components.

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Service area

Offering

Products & services

Industry:Mechanical engineering
✓ Offered4
Process plant engineering for thermal waste and biomass utilization
EPC of complete systems with customer-specific concepts and solutions for thermal waste and biomass utilization based on grate and rotary kiln burners.
Grate firing system
Water-cooled grate firing systems with tailored grate widths, flexible single-stage control, hydraulic single-stage drive and adaptive firing rate control.
Rotary kiln firing system
Rotary kiln firing systems as the second central combustion technology for thermal waste and biomass utilization.
Combustion and plant components
Bunker gates, refuse chutes/cutters, feed systems, grate drives, grate refurbishments, secondary air, firing rate control and slag removal for firing systems.
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Thomas Stiefel

Trust & reputation

ranQ Trust Score of Thomas Stiefel

Trust Score

No score yet

x

A published score requires a data basis of at least 50% and data from at least two criteria groups other than identity. Missing evidence: Review quality, Review volume, Review recency, Media authority

Data basis 54% · As of November 2026

Thomas Stiefel 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%
Thomas Stiefel scores 78.5 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%
Thomas Stiefel 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%
Thomas Stiefel scores 0.0 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 35.0.04%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%

The data basis is 54%, below the threshold at which ranQ publishes a score. Evidence is missing for: Review quality, Review volume, Review recency, Media authority. As of November 2026.

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

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Location

Hofstrasse 87
8620 Wetzikon Zh

At a glance

Legal form
Sole proprietorship
UID
CHE-106.745.323
Founded
1991 · 35 years
Last commercial register change
April 13, 2016
Employees
1 to 10

Active in 1 of 26 cantons

  • ZHZurich
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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