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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint746,952 companies indexed · Last updated: today
DirectoryIndustryMechanical engineeringZwingenLuisi & Diener AG
Luisi & Diener AG Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Luisi & Diener AG manufactures precision components by turning and milling for customers in various industries. It produces complex mechanical workpieces and series parts, mainly from stainless steel, and also offers sawing, metrology, laser marking and automated production.

AI-generated
Offering

Products & services

Industry:Mechanical engineering
✓ Offered9
Precision mechanics
Manufacture of complex mechanical workpieces in medium to large batch sizes, mainly in stainless steel; including delivery dates, first article inspection reports, safety stocks and Kanban deliveries.
Sawing
Automatic sawing machines for cutting workpieces up to 260 mm diameter.
Turning shop
Turning of workpieces up to 400 mm diameter, with loading robots for workpieces up to 30 kg.
Milling shop
Milling on up to 4 axes with working areas up to x 1’500 mm, y 650 mm and z 550 mm.
Multi-spindle machining
Complete machining up to 760 mm diameter and 1’500 mm length, with loading robots for workpieces up to 20 kg.
Metrology
3D coordinate measurements for generating measurement reports and first article inspection reports, measuring range 700 x 700 x 600 mm.
Laser marking
Marking of simple digits up to serial numbers with QR/2D DataMatrix code, with loading robots for workpieces up to 7 kg.
Automated manufacturing
Unmanned production for cost optimization, for turning up to 30 kg, complete machining up to 20 kg and laser marking up to 7 kg workpiece weight.
CAD/CAM programming
Programming directly from the STP file to optimize travel paths and tool use.
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4.0/5

Luisi & Diener AG

Trust & reputation

ranQ Trust Score of Luisi & Diener AG: 4.0 out of 5.0

Trust Score4.0/ 5.0

High

x

Data basis 96% · As of November 2026

Luisi & Diener AG 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%
Luisi & Diener AG scores 89.3 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.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%
Luisi & Diener 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%
Luisi & Diener AG scores 22.9 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 35.22.94%
  • Media authority: No data point — the criterion is taken out of the weighting and does not lower the score.—4%
Qualifications+0.00

Luisi & Diener AG reaches a ranQ Trust Score of 4.0 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 November 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

Bünnenweg 16
4222 Zwingen
Opening hours
Mon
07:30 - 12:00, 13:00 - 17:00
Tue
07:30 - 12:00, 13:00 - 17:00
Wed
07:30 - 12:00, 13:00 - 17:00
Thu
07:30 - 12:00, 13:00 - 17:00
Fri
07:30 - 12:00, 13:00 - 17:00
Sat
Closed
Sun
Closed

At a glance

Legal form
Corporation
UID
CHE-107.785.420
Founded
1990 · 36 years
Last commercial register change
December 27, 2024
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.
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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