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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,629 companies indexed · Last updated: today
DirectoryIndustryPlastics IndustryTherwilWerren Kunststoffe GmbH
Werren Kunststoffe GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

The core activity of Werren Kunststoffe GmbH encompasses the manufacture and construction of: * Pipelines for various applications (drinking water, wastewater, process water, double pipelines) made from plastics such as PE, PP, PVC, and PVDF * Plastic equipment and systems for industry, particularly for environmental technology, such as tanks, air washers, exhaust air ducts, and suction hoods * Oil separators and emulsion maintenance devices in various sizes and applications. Thus, the company offers a wide range of products and services in the field of plastics processing and application.

AI-generated
Offering

Products & services

Industry:Plastics Industry
✓ Offered4
Pipeline construction
Pipelines up to 800 mm diameter for wastewater, drinking water, acids, alkalis and gases made of PE, PP, PVC and PVDF; pressure, process water, twin-pipe, wastewater and sewer lines.
Apparatus construction
Plastic apparatus and tank construction in PE, PP, PVC, PVDF and other plastics; tanks, covers, reservoir liners, air exhaust scrubbers, laboratory equipment as well as turned and milled parts.
Oil separator
QUICKSEP® oil separators for removing free oils from machining emulsions, wash liquors and hardening baths; Mini-Quicksep 70/120 as well as the Quicksep series for different throughputs.
Design, manufacture and installation of plastic systems
Planning, design, manufacture and professional installation of complete systems made of thermoplastic plastics for industrial, wastewater and swimming pool construction, including advice on material and system selection.
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3.8/5

Werren Kunststoffe GmbH

Trust & reputation

ranQ Trust Score of Werren Kunststoffe GmbH: 3.8 out of 5.0

Trust Score3.8/ 5.0

High

x

Data basis 96% · As of October 2026

Werren Kunststoffe GmbH scores 51.4 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.66.724%
  • 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.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%
Werren Kunststoffe 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%
Werren Kunststoffe 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%
Werren Kunststoffe GmbH 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%
Qualifications+0.00

Werren Kunststoffe GmbH reaches a ranQ Trust Score of 3.8 out of 5.0 — rated «High». The rating draws, among other things, on 4.5 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
4.5
of 5

Aggregated from 2 reviews across all connected sources

Sources
GGoogle4.52
★TrustpilotSoon
PProvenExpertSoon

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

Knowledge

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Location

Wilmattstrasse 41
4106 Therwil
Opening hours
Mon
07:00 - 12:00, 13:00 - 16:30
Tue
07:00 - 12:00, 13:00 - 16:30
Wed
07:00 - 12:00, 13:00 - 16:30
Thu
07:00 - 12:00, 13:00 - 16:30
Fri
07:00 - 12:00, 13:00 - 15:30
Sat
Closed
Sun
Closed

At a glance

Legal form
Limited Liability Company
UID
CHE-114.656.130
Founded
2009 · 17 years
Last commercial register change
January 19, 2015
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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