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© 2026 cohaga AG · All Rights Reserved · St. Gallen, Switzerland · Imprint745,888 companies indexed · Last updated: today
DirectoryIndustryPlastics IndustryLengnau BeJohann Renfer GmbH
Johann Renfer GmbH Logo
Verified· 3 sourcesTrust Score
Summary

About the company

Johann Renfer GmbH produces plastic packaging and manufactures customer-specific plastic parts. Services include engineering, toolmaking and series production by injection moulding and thermoforming, and the company supplies a range of standard packaging items from stock.

AI-generated
Offering

Products & services

Industry:Plastics Industry
✓ Offered6
Custom plastic parts
Design and manufacture custom plastic parts in series, including engineering, mold making, and production using injection molding, deep drawing, as well as in-house film extrusion and granule extrusion.
Plastic packaging
Plastic packaging for handling, storage and transport, including manual and automated solutions, individual packaging, support trays, as well as ESD and conductive versions.
Standard packaging ex stock
Standard packaging ex stock with more than 1,000 items, including cases, tins, containers, compartment trays and accessories.
Injection molding
Injection molding for small runs, short project lead times and high product variant diversity, using standard plastics and engineering high-performance plastics.
Deep drawing
Deep drawing for the smallest to medium series, with rapid development of parts and tools, as well as adjustments via in-house film extrusion.
Mold making
Mold making with 5-axis milling, automatic pallet change, sinker EDM, wire EDM and tactile measuring for projects and series production.
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4.1/5

Johann Renfer GmbH

Trust & reputation

ranQ Trust Score of Johann Renfer GmbH: 4.1 out of 5.0

Trust Score4.1/ 5.0

High

x

Data basis 96% · As of October 2026

Johann Renfer GmbH scores 62.6 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.52.524%
  • 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.61.010%
  • 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.95.08%
Johann Renfer 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%
Johann Renfer 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%
Johann Renfer GmbH 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

Johann Renfer GmbH reaches a ranQ Trust Score of 4.1 out of 5.0 — rated «High». The rating draws, among other things, on 3.8 out of 5 stars from 10 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
3.8
of 5

Aggregated from 10 reviews across all connected sources

Sources
GGoogle3.810
★TrustpilotSoon
PProvenExpertSoon

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

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Comparisons

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Location

Bielstrasse 12
2543 Lengnau Be

At a glance

Legal form
Limited Liability Company
UID
CHE-101.440.371
Founded
1939 · 87 years
Last commercial register change
February 17, 2025
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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